Factors that account for inter-individual variability of lateralization performance revealed by correlations of performance among multiple psychoacoustical tasks

This study explored the source of inter-listener variability in the performance of lateralization tasks based on interaural time or level differences (ITDs or ILDs) by examining correlation of performance between pairs of multiple psychoacoustical tasks. The ITD, ILD, Time, and Level tasks were inte...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Atsushi eOchi [verfasserIn] Tatsuya eYamasoba [verfasserIn] Shigeto eFurukawa [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2014

Schlagwörter:	pitch Correlation interaural level difference interaural time difference phase locking level discrimination

Übergeordnetes Werk:	In: Frontiers in Neuroscience - Frontiers Media S.A., 2008, 8(2014)
Übergeordnetes Werk:	volume:8 ; year:2014

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3389/fnins.2014.00027

Katalog-ID:	DOAJ038149729

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language	English
source	In Frontiers in Neuroscience 8(2014) volume:8 year:2014
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topic_facet	pitch Correlation interaural level difference interaural time difference phase locking level discrimination Neurosciences. Biological psychiatry. Neuropsychiatry
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container_title	Frontiers in Neuroscience
authorswithroles_txt_mv	Atsushi eOchi @@aut@@ Tatsuya eYamasoba @@aut@@ Shigeto eFurukawa @@aut@@
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callnumber-first	R - Medicine
author	Atsushi eOchi
spellingShingle	Atsushi eOchi misc RC321-571 misc pitch misc Correlation misc interaural level difference misc interaural time difference misc phase locking misc level discrimination misc Neurosciences. Biological psychiatry. Neuropsychiatry Factors that account for inter-individual variability of lateralization performance revealed by correlations of performance among multiple psychoacoustical tasks
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topic_title	RC321-571 Factors that account for inter-individual variability of lateralization performance revealed by correlations of performance among multiple psychoacoustical tasks pitch Correlation interaural level difference interaural time difference phase locking level discrimination
topic	misc RC321-571 misc pitch misc Correlation misc interaural level difference misc interaural time difference misc phase locking misc level discrimination misc Neurosciences. Biological psychiatry. Neuropsychiatry
topic_unstemmed	misc RC321-571 misc pitch misc Correlation misc interaural level difference misc interaural time difference misc phase locking misc level discrimination misc Neurosciences. Biological psychiatry. Neuropsychiatry
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title	Factors that account for inter-individual variability of lateralization performance revealed by correlations of performance among multiple psychoacoustical tasks
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title_full	Factors that account for inter-individual variability of lateralization performance revealed by correlations of performance among multiple psychoacoustical tasks
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title_sort	factors that account for inter-individual variability of lateralization performance revealed by correlations of performance among multiple psychoacoustical tasks
callnumber	RC321-571
title_auth	Factors that account for inter-individual variability of lateralization performance revealed by correlations of performance among multiple psychoacoustical tasks
abstract	This study explored the source of inter-listener variability in the performance of lateralization tasks based on interaural time or level differences (ITDs or ILDs) by examining correlation of performance between pairs of multiple psychoacoustical tasks. The ITD, ILD, Time, and Level tasks were intended to measure sensitivities to ITD; ILD; temporal fine structure or envelope of the stimulus encoded by the neural phase locking; and stimulus level, respectively. Stimuli in low- and high-frequency regions were tested. The low-frequency stimulus was a harmonic complex (F0 = 100 Hz) that was spectrally shaped for the frequency region around the 11th harmonic. The high frequency stimulus was a ‘transposed stimulus’, which was a 4-kHz tone amplitude-modulated with a half-wave rectified 125-Hz sinusoid. The task procedures were essentially the same between the low- and high-frequency stimuli. Generally, the thresholds for pairs of ITD and ILD tasks, across cues or frequencies, exhibited significant positive correlations, suggesting a common mechanism across cues and frequencies underlying the lateralization tasks. For the high frequency stimulus, there was a significant positive correlation of performance between the ITD and Time tasks. A significant positive correlation was found also in the pair of ILD and Level tasks for the low- frequency stimulus. These results indicate that the inter-listener variability of ITD and ILD sensitivities could be accounted for partially by the variability of monaural efficiency of neural phase locking and intensity coding, respectively, depending of frequency.
abstractGer	This study explored the source of inter-listener variability in the performance of lateralization tasks based on interaural time or level differences (ITDs or ILDs) by examining correlation of performance between pairs of multiple psychoacoustical tasks. The ITD, ILD, Time, and Level tasks were intended to measure sensitivities to ITD; ILD; temporal fine structure or envelope of the stimulus encoded by the neural phase locking; and stimulus level, respectively. Stimuli in low- and high-frequency regions were tested. The low-frequency stimulus was a harmonic complex (F0 = 100 Hz) that was spectrally shaped for the frequency region around the 11th harmonic. The high frequency stimulus was a ‘transposed stimulus’, which was a 4-kHz tone amplitude-modulated with a half-wave rectified 125-Hz sinusoid. The task procedures were essentially the same between the low- and high-frequency stimuli. Generally, the thresholds for pairs of ITD and ILD tasks, across cues or frequencies, exhibited significant positive correlations, suggesting a common mechanism across cues and frequencies underlying the lateralization tasks. For the high frequency stimulus, there was a significant positive correlation of performance between the ITD and Time tasks. A significant positive correlation was found also in the pair of ILD and Level tasks for the low- frequency stimulus. These results indicate that the inter-listener variability of ITD and ILD sensitivities could be accounted for partially by the variability of monaural efficiency of neural phase locking and intensity coding, respectively, depending of frequency.
abstract_unstemmed	This study explored the source of inter-listener variability in the performance of lateralization tasks based on interaural time or level differences (ITDs or ILDs) by examining correlation of performance between pairs of multiple psychoacoustical tasks. The ITD, ILD, Time, and Level tasks were intended to measure sensitivities to ITD; ILD; temporal fine structure or envelope of the stimulus encoded by the neural phase locking; and stimulus level, respectively. Stimuli in low- and high-frequency regions were tested. The low-frequency stimulus was a harmonic complex (F0 = 100 Hz) that was spectrally shaped for the frequency region around the 11th harmonic. The high frequency stimulus was a ‘transposed stimulus’, which was a 4-kHz tone amplitude-modulated with a half-wave rectified 125-Hz sinusoid. The task procedures were essentially the same between the low- and high-frequency stimuli. Generally, the thresholds for pairs of ITD and ILD tasks, across cues or frequencies, exhibited significant positive correlations, suggesting a common mechanism across cues and frequencies underlying the lateralization tasks. For the high frequency stimulus, there was a significant positive correlation of performance between the ITD and Time tasks. A significant positive correlation was found also in the pair of ILD and Level tasks for the low- frequency stimulus. These results indicate that the inter-listener variability of ITD and ILD sensitivities could be accounted for partially by the variability of monaural efficiency of neural phase locking and intensity coding, respectively, depending of frequency.
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title_short	Factors that account for inter-individual variability of lateralization performance revealed by correlations of performance among multiple psychoacoustical tasks
url	https://doi.org/10.3389/fnins.2014.00027 https://doaj.org/article/a86a9aeb2c7146c9b5e9586a09c648e2 http://journal.frontiersin.org/Journal/10.3389/fnins.2014.00027/full https://doaj.org/toc/1662-453X
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up_date	2024-07-03T16:19:47.266Z
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Factors that account for inter-individual variability of lateralization performance revealed by correlations of performance among multiple psychoacoustical tasks

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