Frequency response of EEG recordings from BIS and Entropy devices
Abstract The BIS and Entropy systems are used as indicators of anaesthetic drug effect, and can also record EEGs in digital form. A number of studies have used such recordings for analysis, even though information about bandwidth and fidelity has not been provided by the manufacturers. In this study...
Ausführliche Beschreibung
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| Autor*in: |
Schuller, Peter J. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2021 |
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| Schlagwörter: |
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| Anmerkung: |
© Crown 2021 |
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| Übergeordnetes Werk: |
Enthalten in: Journal of clinical monitoring and computing - Dordrecht [u.a.] : Springer Science + Business Media B.V., 1985, 36(2021), 3 vom: 16. Apr., Seite 675-685 |
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| Übergeordnetes Werk: |
volume:36 ; year:2021 ; number:3 ; day:16 ; month:04 ; pages:675-685 |
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| DOI / URN: |
10.1007/s10877-021-00694-0 |
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SPR047167823 |
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| 520 | |a Abstract The BIS and Entropy systems are used as indicators of anaesthetic drug effect, and can also record EEGs in digital form. A number of studies have used such recordings for analysis, even though information about bandwidth and fidelity has not been provided by the manufacturers. In this study we consider these systems purely as EEG recording devices, and evaluate their suitability for quantitative analysis. Using a calibrated electronic testing system, we played an artificial test signal of known amplitude with frequency varying from 0.01 to 400 Hz into the BIS and Entropy EEG systems, and saved the recording in each of their supported recording modes. The amplitude of the recording at each frequency was then used to derive the frequency response curves, as well as the 3 dB and 0.5 dB points for each mode. There are important differences between the various BIS and Entropy recordings. The BIS 256 Hz and the Entropy 400 Hz recordings are broadly comparable, although Entropy has a slightly reduced response above 50 Hz and below 1 Hz. The BIS 128 Hz recording has a somewhat reduced bandwidth, due to its relatively low sampling rate. The Entropy 100 Hz recording in the Datex-Ohmeda S/5 monitor has a flawed implementation, leading to aliasing of signals over 50 Hz and potential distortion of the recording, while in the GE Carescape it has an uneven response and a narrowed bandwidth. Consequently, it is important to know which specific host monitor was used when an Entropy 100 Hz recording was made. In summary, the choice of recording device and host monitor may affect the results of some quantitative EEG analysis, and some previously published studies may need to be re-evaluated. | ||
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| 650 | 4 | |a Depth of Anaesthesia |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Frontal cortex monitors |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Pretorius, Jan P. G. |4 aut | |
| 700 | 1 | |a Newbery, Kym B. |4 aut | |
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10.1007/s10877-021-00694-0 doi (DE-627)SPR047167823 (SPR)s10877-021-00694-0-e DE-627 ger DE-627 rakwb eng Schuller, Peter J. verfasserin (orcid)0000-0001-5441-6464 aut Frequency response of EEG recordings from BIS and Entropy devices 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Crown 2021 Abstract The BIS and Entropy systems are used as indicators of anaesthetic drug effect, and can also record EEGs in digital form. A number of studies have used such recordings for analysis, even though information about bandwidth and fidelity has not been provided by the manufacturers. In this study we consider these systems purely as EEG recording devices, and evaluate their suitability for quantitative analysis. Using a calibrated electronic testing system, we played an artificial test signal of known amplitude with frequency varying from 0.01 to 400 Hz into the BIS and Entropy EEG systems, and saved the recording in each of their supported recording modes. The amplitude of the recording at each frequency was then used to derive the frequency response curves, as well as the 3 dB and 0.5 dB points for each mode. There are important differences between the various BIS and Entropy recordings. The BIS 256 Hz and the Entropy 400 Hz recordings are broadly comparable, although Entropy has a slightly reduced response above 50 Hz and below 1 Hz. The BIS 128 Hz recording has a somewhat reduced bandwidth, due to its relatively low sampling rate. The Entropy 100 Hz recording in the Datex-Ohmeda S/5 monitor has a flawed implementation, leading to aliasing of signals over 50 Hz and potential distortion of the recording, while in the GE Carescape it has an uneven response and a narrowed bandwidth. Consequently, it is important to know which specific host monitor was used when an Entropy 100 Hz recording was made. In summary, the choice of recording device and host monitor may affect the results of some quantitative EEG analysis, and some previously published studies may need to be re-evaluated. Entropy (dpeaa)DE-He213 Bispectral index (dpeaa)DE-He213 Electroencephalography (dpeaa)DE-He213 Depth of Anaesthesia (dpeaa)DE-He213 Frontal cortex monitors (dpeaa)DE-He213 Pretorius, Jan P. G. aut Newbery, Kym B. aut Enthalten in Journal of clinical monitoring and computing Dordrecht [u.a.] : Springer Science + Business Media B.V., 1985 36(2021), 3 vom: 16. Apr., Seite 675-685 (DE-627)320483797 (DE-600)2010139-9 1573-2614 nnns volume:36 year:2021 number:3 day:16 month:04 pages:675-685 https://dx.doi.org/10.1007/s10877-021-00694-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 36 2021 3 16 04 675-685 |
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10.1007/s10877-021-00694-0 doi (DE-627)SPR047167823 (SPR)s10877-021-00694-0-e DE-627 ger DE-627 rakwb eng Schuller, Peter J. verfasserin (orcid)0000-0001-5441-6464 aut Frequency response of EEG recordings from BIS and Entropy devices 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Crown 2021 Abstract The BIS and Entropy systems are used as indicators of anaesthetic drug effect, and can also record EEGs in digital form. A number of studies have used such recordings for analysis, even though information about bandwidth and fidelity has not been provided by the manufacturers. In this study we consider these systems purely as EEG recording devices, and evaluate their suitability for quantitative analysis. Using a calibrated electronic testing system, we played an artificial test signal of known amplitude with frequency varying from 0.01 to 400 Hz into the BIS and Entropy EEG systems, and saved the recording in each of their supported recording modes. The amplitude of the recording at each frequency was then used to derive the frequency response curves, as well as the 3 dB and 0.5 dB points for each mode. There are important differences between the various BIS and Entropy recordings. The BIS 256 Hz and the Entropy 400 Hz recordings are broadly comparable, although Entropy has a slightly reduced response above 50 Hz and below 1 Hz. The BIS 128 Hz recording has a somewhat reduced bandwidth, due to its relatively low sampling rate. The Entropy 100 Hz recording in the Datex-Ohmeda S/5 monitor has a flawed implementation, leading to aliasing of signals over 50 Hz and potential distortion of the recording, while in the GE Carescape it has an uneven response and a narrowed bandwidth. Consequently, it is important to know which specific host monitor was used when an Entropy 100 Hz recording was made. In summary, the choice of recording device and host monitor may affect the results of some quantitative EEG analysis, and some previously published studies may need to be re-evaluated. Entropy (dpeaa)DE-He213 Bispectral index (dpeaa)DE-He213 Electroencephalography (dpeaa)DE-He213 Depth of Anaesthesia (dpeaa)DE-He213 Frontal cortex monitors (dpeaa)DE-He213 Pretorius, Jan P. G. aut Newbery, Kym B. aut Enthalten in Journal of clinical monitoring and computing Dordrecht [u.a.] : Springer Science + Business Media B.V., 1985 36(2021), 3 vom: 16. Apr., Seite 675-685 (DE-627)320483797 (DE-600)2010139-9 1573-2614 nnns volume:36 year:2021 number:3 day:16 month:04 pages:675-685 https://dx.doi.org/10.1007/s10877-021-00694-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 36 2021 3 16 04 675-685 |
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10.1007/s10877-021-00694-0 doi (DE-627)SPR047167823 (SPR)s10877-021-00694-0-e DE-627 ger DE-627 rakwb eng Schuller, Peter J. verfasserin (orcid)0000-0001-5441-6464 aut Frequency response of EEG recordings from BIS and Entropy devices 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Crown 2021 Abstract The BIS and Entropy systems are used as indicators of anaesthetic drug effect, and can also record EEGs in digital form. A number of studies have used such recordings for analysis, even though information about bandwidth and fidelity has not been provided by the manufacturers. In this study we consider these systems purely as EEG recording devices, and evaluate their suitability for quantitative analysis. Using a calibrated electronic testing system, we played an artificial test signal of known amplitude with frequency varying from 0.01 to 400 Hz into the BIS and Entropy EEG systems, and saved the recording in each of their supported recording modes. The amplitude of the recording at each frequency was then used to derive the frequency response curves, as well as the 3 dB and 0.5 dB points for each mode. There are important differences between the various BIS and Entropy recordings. The BIS 256 Hz and the Entropy 400 Hz recordings are broadly comparable, although Entropy has a slightly reduced response above 50 Hz and below 1 Hz. The BIS 128 Hz recording has a somewhat reduced bandwidth, due to its relatively low sampling rate. The Entropy 100 Hz recording in the Datex-Ohmeda S/5 monitor has a flawed implementation, leading to aliasing of signals over 50 Hz and potential distortion of the recording, while in the GE Carescape it has an uneven response and a narrowed bandwidth. Consequently, it is important to know which specific host monitor was used when an Entropy 100 Hz recording was made. In summary, the choice of recording device and host monitor may affect the results of some quantitative EEG analysis, and some previously published studies may need to be re-evaluated. Entropy (dpeaa)DE-He213 Bispectral index (dpeaa)DE-He213 Electroencephalography (dpeaa)DE-He213 Depth of Anaesthesia (dpeaa)DE-He213 Frontal cortex monitors (dpeaa)DE-He213 Pretorius, Jan P. G. aut Newbery, Kym B. aut Enthalten in Journal of clinical monitoring and computing Dordrecht [u.a.] : Springer Science + Business Media B.V., 1985 36(2021), 3 vom: 16. Apr., Seite 675-685 (DE-627)320483797 (DE-600)2010139-9 1573-2614 nnns volume:36 year:2021 number:3 day:16 month:04 pages:675-685 https://dx.doi.org/10.1007/s10877-021-00694-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 36 2021 3 16 04 675-685 |
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10.1007/s10877-021-00694-0 doi (DE-627)SPR047167823 (SPR)s10877-021-00694-0-e DE-627 ger DE-627 rakwb eng Schuller, Peter J. verfasserin (orcid)0000-0001-5441-6464 aut Frequency response of EEG recordings from BIS and Entropy devices 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Crown 2021 Abstract The BIS and Entropy systems are used as indicators of anaesthetic drug effect, and can also record EEGs in digital form. A number of studies have used such recordings for analysis, even though information about bandwidth and fidelity has not been provided by the manufacturers. In this study we consider these systems purely as EEG recording devices, and evaluate their suitability for quantitative analysis. Using a calibrated electronic testing system, we played an artificial test signal of known amplitude with frequency varying from 0.01 to 400 Hz into the BIS and Entropy EEG systems, and saved the recording in each of their supported recording modes. The amplitude of the recording at each frequency was then used to derive the frequency response curves, as well as the 3 dB and 0.5 dB points for each mode. There are important differences between the various BIS and Entropy recordings. The BIS 256 Hz and the Entropy 400 Hz recordings are broadly comparable, although Entropy has a slightly reduced response above 50 Hz and below 1 Hz. The BIS 128 Hz recording has a somewhat reduced bandwidth, due to its relatively low sampling rate. The Entropy 100 Hz recording in the Datex-Ohmeda S/5 monitor has a flawed implementation, leading to aliasing of signals over 50 Hz and potential distortion of the recording, while in the GE Carescape it has an uneven response and a narrowed bandwidth. Consequently, it is important to know which specific host monitor was used when an Entropy 100 Hz recording was made. In summary, the choice of recording device and host monitor may affect the results of some quantitative EEG analysis, and some previously published studies may need to be re-evaluated. Entropy (dpeaa)DE-He213 Bispectral index (dpeaa)DE-He213 Electroencephalography (dpeaa)DE-He213 Depth of Anaesthesia (dpeaa)DE-He213 Frontal cortex monitors (dpeaa)DE-He213 Pretorius, Jan P. G. aut Newbery, Kym B. aut Enthalten in Journal of clinical monitoring and computing Dordrecht [u.a.] : Springer Science + Business Media B.V., 1985 36(2021), 3 vom: 16. Apr., Seite 675-685 (DE-627)320483797 (DE-600)2010139-9 1573-2614 nnns volume:36 year:2021 number:3 day:16 month:04 pages:675-685 https://dx.doi.org/10.1007/s10877-021-00694-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 36 2021 3 16 04 675-685 |
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10.1007/s10877-021-00694-0 doi (DE-627)SPR047167823 (SPR)s10877-021-00694-0-e DE-627 ger DE-627 rakwb eng Schuller, Peter J. verfasserin (orcid)0000-0001-5441-6464 aut Frequency response of EEG recordings from BIS and Entropy devices 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Crown 2021 Abstract The BIS and Entropy systems are used as indicators of anaesthetic drug effect, and can also record EEGs in digital form. A number of studies have used such recordings for analysis, even though information about bandwidth and fidelity has not been provided by the manufacturers. In this study we consider these systems purely as EEG recording devices, and evaluate their suitability for quantitative analysis. Using a calibrated electronic testing system, we played an artificial test signal of known amplitude with frequency varying from 0.01 to 400 Hz into the BIS and Entropy EEG systems, and saved the recording in each of their supported recording modes. The amplitude of the recording at each frequency was then used to derive the frequency response curves, as well as the 3 dB and 0.5 dB points for each mode. There are important differences between the various BIS and Entropy recordings. The BIS 256 Hz and the Entropy 400 Hz recordings are broadly comparable, although Entropy has a slightly reduced response above 50 Hz and below 1 Hz. The BIS 128 Hz recording has a somewhat reduced bandwidth, due to its relatively low sampling rate. The Entropy 100 Hz recording in the Datex-Ohmeda S/5 monitor has a flawed implementation, leading to aliasing of signals over 50 Hz and potential distortion of the recording, while in the GE Carescape it has an uneven response and a narrowed bandwidth. Consequently, it is important to know which specific host monitor was used when an Entropy 100 Hz recording was made. In summary, the choice of recording device and host monitor may affect the results of some quantitative EEG analysis, and some previously published studies may need to be re-evaluated. Entropy (dpeaa)DE-He213 Bispectral index (dpeaa)DE-He213 Electroencephalography (dpeaa)DE-He213 Depth of Anaesthesia (dpeaa)DE-He213 Frontal cortex monitors (dpeaa)DE-He213 Pretorius, Jan P. G. aut Newbery, Kym B. aut Enthalten in Journal of clinical monitoring and computing Dordrecht [u.a.] : Springer Science + Business Media B.V., 1985 36(2021), 3 vom: 16. Apr., Seite 675-685 (DE-627)320483797 (DE-600)2010139-9 1573-2614 nnns volume:36 year:2021 number:3 day:16 month:04 pages:675-685 https://dx.doi.org/10.1007/s10877-021-00694-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 36 2021 3 16 04 675-685 |
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Schuller, Peter J. |
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Schuller, Peter J. misc Entropy misc Bispectral index misc Electroencephalography misc Depth of Anaesthesia misc Frontal cortex monitors Frequency response of EEG recordings from BIS and Entropy devices |
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Frequency response of EEG recordings from BIS and Entropy devices Entropy (dpeaa)DE-He213 Bispectral index (dpeaa)DE-He213 Electroencephalography (dpeaa)DE-He213 Depth of Anaesthesia (dpeaa)DE-He213 Frontal cortex monitors (dpeaa)DE-He213 |
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Frequency response of EEG recordings from BIS and Entropy devices |
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Frequency response of EEG recordings from BIS and Entropy devices |
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Schuller, Peter J. |
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Journal of clinical monitoring and computing |
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frequency response of eeg recordings from bis and entropy devices |
| title_auth |
Frequency response of EEG recordings from BIS and Entropy devices |
| abstract |
Abstract The BIS and Entropy systems are used as indicators of anaesthetic drug effect, and can also record EEGs in digital form. A number of studies have used such recordings for analysis, even though information about bandwidth and fidelity has not been provided by the manufacturers. In this study we consider these systems purely as EEG recording devices, and evaluate their suitability for quantitative analysis. Using a calibrated electronic testing system, we played an artificial test signal of known amplitude with frequency varying from 0.01 to 400 Hz into the BIS and Entropy EEG systems, and saved the recording in each of their supported recording modes. The amplitude of the recording at each frequency was then used to derive the frequency response curves, as well as the 3 dB and 0.5 dB points for each mode. There are important differences between the various BIS and Entropy recordings. The BIS 256 Hz and the Entropy 400 Hz recordings are broadly comparable, although Entropy has a slightly reduced response above 50 Hz and below 1 Hz. The BIS 128 Hz recording has a somewhat reduced bandwidth, due to its relatively low sampling rate. The Entropy 100 Hz recording in the Datex-Ohmeda S/5 monitor has a flawed implementation, leading to aliasing of signals over 50 Hz and potential distortion of the recording, while in the GE Carescape it has an uneven response and a narrowed bandwidth. Consequently, it is important to know which specific host monitor was used when an Entropy 100 Hz recording was made. In summary, the choice of recording device and host monitor may affect the results of some quantitative EEG analysis, and some previously published studies may need to be re-evaluated. © Crown 2021 |
| abstractGer |
Abstract The BIS and Entropy systems are used as indicators of anaesthetic drug effect, and can also record EEGs in digital form. A number of studies have used such recordings for analysis, even though information about bandwidth and fidelity has not been provided by the manufacturers. In this study we consider these systems purely as EEG recording devices, and evaluate their suitability for quantitative analysis. Using a calibrated electronic testing system, we played an artificial test signal of known amplitude with frequency varying from 0.01 to 400 Hz into the BIS and Entropy EEG systems, and saved the recording in each of their supported recording modes. The amplitude of the recording at each frequency was then used to derive the frequency response curves, as well as the 3 dB and 0.5 dB points for each mode. There are important differences between the various BIS and Entropy recordings. The BIS 256 Hz and the Entropy 400 Hz recordings are broadly comparable, although Entropy has a slightly reduced response above 50 Hz and below 1 Hz. The BIS 128 Hz recording has a somewhat reduced bandwidth, due to its relatively low sampling rate. The Entropy 100 Hz recording in the Datex-Ohmeda S/5 monitor has a flawed implementation, leading to aliasing of signals over 50 Hz and potential distortion of the recording, while in the GE Carescape it has an uneven response and a narrowed bandwidth. Consequently, it is important to know which specific host monitor was used when an Entropy 100 Hz recording was made. In summary, the choice of recording device and host monitor may affect the results of some quantitative EEG analysis, and some previously published studies may need to be re-evaluated. © Crown 2021 |
| abstract_unstemmed |
Abstract The BIS and Entropy systems are used as indicators of anaesthetic drug effect, and can also record EEGs in digital form. A number of studies have used such recordings for analysis, even though information about bandwidth and fidelity has not been provided by the manufacturers. In this study we consider these systems purely as EEG recording devices, and evaluate their suitability for quantitative analysis. Using a calibrated electronic testing system, we played an artificial test signal of known amplitude with frequency varying from 0.01 to 400 Hz into the BIS and Entropy EEG systems, and saved the recording in each of their supported recording modes. The amplitude of the recording at each frequency was then used to derive the frequency response curves, as well as the 3 dB and 0.5 dB points for each mode. There are important differences between the various BIS and Entropy recordings. The BIS 256 Hz and the Entropy 400 Hz recordings are broadly comparable, although Entropy has a slightly reduced response above 50 Hz and below 1 Hz. The BIS 128 Hz recording has a somewhat reduced bandwidth, due to its relatively low sampling rate. The Entropy 100 Hz recording in the Datex-Ohmeda S/5 monitor has a flawed implementation, leading to aliasing of signals over 50 Hz and potential distortion of the recording, while in the GE Carescape it has an uneven response and a narrowed bandwidth. Consequently, it is important to know which specific host monitor was used when an Entropy 100 Hz recording was made. In summary, the choice of recording device and host monitor may affect the results of some quantitative EEG analysis, and some previously published studies may need to be re-evaluated. © Crown 2021 |
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Frequency response of EEG recordings from BIS and Entropy devices |
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https://dx.doi.org/10.1007/s10877-021-00694-0 |
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Pretorius, Jan P. G. Newbery, Kym B. |
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10.1007/s10877-021-00694-0 |
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| score |
7.399379 |