Compensatory shifts in visual perception are associated with hallucinations in Lewy body disorders

Abstract Visual hallucinations are a common, distressing, and disabling symptom of Lewy body and other diseases. Current models suggest that interactions in internal cognitive processes generate hallucinations. However, these neglect external factors. Pareidolic illusions are an experimental analogu...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Alan Robert Bowman [verfasserIn] Vicki Bruce [verfasserIn] Christopher J. Colbourn [verfasserIn] Daniel Collerton [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2017

Schlagwörter:	Visual hallucinations Signal detection theory Lewy body disorders Parkinson’s disease Dementia Pareidolia

Übergeordnetes Werk:	In: Cognitive Research - SpringerOpen, 2018, 2(2017), 1, Seite 9
Übergeordnetes Werk:	volume:2 ; year:2017 ; number:1 ; pages:9

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1186/s41235-017-0063-6

Katalog-ID:	DOAJ017249341

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520			\|a Abstract Visual hallucinations are a common, distressing, and disabling symptom of Lewy body and other diseases. Current models suggest that interactions in internal cognitive processes generate hallucinations. However, these neglect external factors. Pareidolic illusions are an experimental analogue of hallucinations. They are easily induced in Lewy body disease, have similar content to spontaneous hallucinations, and respond to cholinesterase inhibitors in the same way. We used a primed pareidolia task with hallucinating participants with Lewy body disorders (n = 16), non-hallucinating participants with Lewy body disorders (n = 19), and healthy controls (n = 20). Participants were presented with visual “noise” that sometimes contained degraded visual objects and were required to indicate what they saw. Some perceptions were cued in advance by a visual prime. Results showed that hallucinating participants were impaired in discerning visual signals from noise, with a relaxed criterion threshold for perception compared to both other groups. After the presentation of a visual prime, the criterion was comparable to the other groups. The results suggest that participants with hallucinations compensate for perceptual deficits by relaxing perceptual criteria, at a cost of seeing things that are not there, and that visual cues regularize perception. This latter finding may provide a mechanism for understanding the interaction between environments and hallucinations.
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spelling	10.1186/s41235-017-0063-6 doi (DE-627)DOAJ017249341 (DE-599)DOAJa2ac2187cf8748c7b6efc64dc83ed563 DE-627 ger DE-627 rakwb eng BF309-499 Alan Robert Bowman verfasserin aut Compensatory shifts in visual perception are associated with hallucinations in Lewy body disorders 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Visual hallucinations are a common, distressing, and disabling symptom of Lewy body and other diseases. Current models suggest that interactions in internal cognitive processes generate hallucinations. However, these neglect external factors. Pareidolic illusions are an experimental analogue of hallucinations. They are easily induced in Lewy body disease, have similar content to spontaneous hallucinations, and respond to cholinesterase inhibitors in the same way. We used a primed pareidolia task with hallucinating participants with Lewy body disorders (n = 16), non-hallucinating participants with Lewy body disorders (n = 19), and healthy controls (n = 20). Participants were presented with visual “noise” that sometimes contained degraded visual objects and were required to indicate what they saw. Some perceptions were cued in advance by a visual prime. Results showed that hallucinating participants were impaired in discerning visual signals from noise, with a relaxed criterion threshold for perception compared to both other groups. After the presentation of a visual prime, the criterion was comparable to the other groups. The results suggest that participants with hallucinations compensate for perceptual deficits by relaxing perceptual criteria, at a cost of seeing things that are not there, and that visual cues regularize perception. This latter finding may provide a mechanism for understanding the interaction between environments and hallucinations. Visual hallucinations Signal detection theory Lewy body disorders Parkinson’s disease Dementia Pareidolia Consciousness. Cognition Vicki Bruce verfasserin aut Christopher J. Colbourn verfasserin aut Daniel Collerton verfasserin aut In Cognitive Research SpringerOpen, 2018 2(2017), 1, Seite 9 (DE-627)844431605 (DE-600)2843152-2 23657464 nnns volume:2 year:2017 number:1 pages:9 https://doi.org/10.1186/s41235-017-0063-6 kostenfrei https://doaj.org/article/a2ac2187cf8748c7b6efc64dc83ed563 kostenfrei http://link.springer.com/article/10.1186/s41235-017-0063-6 kostenfrei https://doaj.org/toc/2365-7464 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2086 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2 2017 1 9
allfields_unstemmed	10.1186/s41235-017-0063-6 doi (DE-627)DOAJ017249341 (DE-599)DOAJa2ac2187cf8748c7b6efc64dc83ed563 DE-627 ger DE-627 rakwb eng BF309-499 Alan Robert Bowman verfasserin aut Compensatory shifts in visual perception are associated with hallucinations in Lewy body disorders 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Visual hallucinations are a common, distressing, and disabling symptom of Lewy body and other diseases. Current models suggest that interactions in internal cognitive processes generate hallucinations. However, these neglect external factors. Pareidolic illusions are an experimental analogue of hallucinations. They are easily induced in Lewy body disease, have similar content to spontaneous hallucinations, and respond to cholinesterase inhibitors in the same way. We used a primed pareidolia task with hallucinating participants with Lewy body disorders (n = 16), non-hallucinating participants with Lewy body disorders (n = 19), and healthy controls (n = 20). Participants were presented with visual “noise” that sometimes contained degraded visual objects and were required to indicate what they saw. Some perceptions were cued in advance by a visual prime. Results showed that hallucinating participants were impaired in discerning visual signals from noise, with a relaxed criterion threshold for perception compared to both other groups. After the presentation of a visual prime, the criterion was comparable to the other groups. The results suggest that participants with hallucinations compensate for perceptual deficits by relaxing perceptual criteria, at a cost of seeing things that are not there, and that visual cues regularize perception. This latter finding may provide a mechanism for understanding the interaction between environments and hallucinations. Visual hallucinations Signal detection theory Lewy body disorders Parkinson’s disease Dementia Pareidolia Consciousness. Cognition Vicki Bruce verfasserin aut Christopher J. Colbourn verfasserin aut Daniel Collerton verfasserin aut In Cognitive Research SpringerOpen, 2018 2(2017), 1, Seite 9 (DE-627)844431605 (DE-600)2843152-2 23657464 nnns volume:2 year:2017 number:1 pages:9 https://doi.org/10.1186/s41235-017-0063-6 kostenfrei https://doaj.org/article/a2ac2187cf8748c7b6efc64dc83ed563 kostenfrei http://link.springer.com/article/10.1186/s41235-017-0063-6 kostenfrei https://doaj.org/toc/2365-7464 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2086 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2 2017 1 9
allfieldsGer	10.1186/s41235-017-0063-6 doi (DE-627)DOAJ017249341 (DE-599)DOAJa2ac2187cf8748c7b6efc64dc83ed563 DE-627 ger DE-627 rakwb eng BF309-499 Alan Robert Bowman verfasserin aut Compensatory shifts in visual perception are associated with hallucinations in Lewy body disorders 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Visual hallucinations are a common, distressing, and disabling symptom of Lewy body and other diseases. Current models suggest that interactions in internal cognitive processes generate hallucinations. However, these neglect external factors. Pareidolic illusions are an experimental analogue of hallucinations. They are easily induced in Lewy body disease, have similar content to spontaneous hallucinations, and respond to cholinesterase inhibitors in the same way. We used a primed pareidolia task with hallucinating participants with Lewy body disorders (n = 16), non-hallucinating participants with Lewy body disorders (n = 19), and healthy controls (n = 20). Participants were presented with visual “noise” that sometimes contained degraded visual objects and were required to indicate what they saw. Some perceptions were cued in advance by a visual prime. Results showed that hallucinating participants were impaired in discerning visual signals from noise, with a relaxed criterion threshold for perception compared to both other groups. After the presentation of a visual prime, the criterion was comparable to the other groups. The results suggest that participants with hallucinations compensate for perceptual deficits by relaxing perceptual criteria, at a cost of seeing things that are not there, and that visual cues regularize perception. This latter finding may provide a mechanism for understanding the interaction between environments and hallucinations. Visual hallucinations Signal detection theory Lewy body disorders Parkinson’s disease Dementia Pareidolia Consciousness. Cognition Vicki Bruce verfasserin aut Christopher J. Colbourn verfasserin aut Daniel Collerton verfasserin aut In Cognitive Research SpringerOpen, 2018 2(2017), 1, Seite 9 (DE-627)844431605 (DE-600)2843152-2 23657464 nnns volume:2 year:2017 number:1 pages:9 https://doi.org/10.1186/s41235-017-0063-6 kostenfrei https://doaj.org/article/a2ac2187cf8748c7b6efc64dc83ed563 kostenfrei http://link.springer.com/article/10.1186/s41235-017-0063-6 kostenfrei https://doaj.org/toc/2365-7464 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2086 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2 2017 1 9
allfieldsSound	10.1186/s41235-017-0063-6 doi (DE-627)DOAJ017249341 (DE-599)DOAJa2ac2187cf8748c7b6efc64dc83ed563 DE-627 ger DE-627 rakwb eng BF309-499 Alan Robert Bowman verfasserin aut Compensatory shifts in visual perception are associated with hallucinations in Lewy body disorders 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Visual hallucinations are a common, distressing, and disabling symptom of Lewy body and other diseases. Current models suggest that interactions in internal cognitive processes generate hallucinations. However, these neglect external factors. Pareidolic illusions are an experimental analogue of hallucinations. They are easily induced in Lewy body disease, have similar content to spontaneous hallucinations, and respond to cholinesterase inhibitors in the same way. We used a primed pareidolia task with hallucinating participants with Lewy body disorders (n = 16), non-hallucinating participants with Lewy body disorders (n = 19), and healthy controls (n = 20). Participants were presented with visual “noise” that sometimes contained degraded visual objects and were required to indicate what they saw. Some perceptions were cued in advance by a visual prime. Results showed that hallucinating participants were impaired in discerning visual signals from noise, with a relaxed criterion threshold for perception compared to both other groups. After the presentation of a visual prime, the criterion was comparable to the other groups. The results suggest that participants with hallucinations compensate for perceptual deficits by relaxing perceptual criteria, at a cost of seeing things that are not there, and that visual cues regularize perception. This latter finding may provide a mechanism for understanding the interaction between environments and hallucinations. Visual hallucinations Signal detection theory Lewy body disorders Parkinson’s disease Dementia Pareidolia Consciousness. Cognition Vicki Bruce verfasserin aut Christopher J. Colbourn verfasserin aut Daniel Collerton verfasserin aut In Cognitive Research SpringerOpen, 2018 2(2017), 1, Seite 9 (DE-627)844431605 (DE-600)2843152-2 23657464 nnns volume:2 year:2017 number:1 pages:9 https://doi.org/10.1186/s41235-017-0063-6 kostenfrei https://doaj.org/article/a2ac2187cf8748c7b6efc64dc83ed563 kostenfrei http://link.springer.com/article/10.1186/s41235-017-0063-6 kostenfrei https://doaj.org/toc/2365-7464 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2086 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2 2017 1 9
language	English
source	In Cognitive Research 2(2017), 1, Seite 9 volume:2 year:2017 number:1 pages:9
sourceStr	In Cognitive Research 2(2017), 1, Seite 9 volume:2 year:2017 number:1 pages:9
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Visual hallucinations Signal detection theory Lewy body disorders Parkinson’s disease Dementia Pareidolia Consciousness. Cognition
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container_title	Cognitive Research
authorswithroles_txt_mv	Alan Robert Bowman @@aut@@ Vicki Bruce @@aut@@ Christopher J. Colbourn @@aut@@ Daniel Collerton @@aut@@
publishDateDaySort_date	2017-01-01T00:00:00Z
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callnumber-first	B - Philosophy, Psychology, Religion
author	Alan Robert Bowman
spellingShingle	Alan Robert Bowman misc BF309-499 misc Visual hallucinations misc Signal detection theory misc Lewy body disorders misc Parkinson’s disease misc Dementia misc Pareidolia misc Consciousness. Cognition Compensatory shifts in visual perception are associated with hallucinations in Lewy body disorders
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topic_title	BF309-499 Compensatory shifts in visual perception are associated with hallucinations in Lewy body disorders Visual hallucinations Signal detection theory Lewy body disorders Parkinson’s disease Dementia Pareidolia
topic	misc BF309-499 misc Visual hallucinations misc Signal detection theory misc Lewy body disorders misc Parkinson’s disease misc Dementia misc Pareidolia misc Consciousness. Cognition
topic_unstemmed	misc BF309-499 misc Visual hallucinations misc Signal detection theory misc Lewy body disorders misc Parkinson’s disease misc Dementia misc Pareidolia misc Consciousness. Cognition
topic_browse	misc BF309-499 misc Visual hallucinations misc Signal detection theory misc Lewy body disorders misc Parkinson’s disease misc Dementia misc Pareidolia misc Consciousness. Cognition
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title	Compensatory shifts in visual perception are associated with hallucinations in Lewy body disorders
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title_full	Compensatory shifts in visual perception are associated with hallucinations in Lewy body disorders
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title_sort	compensatory shifts in visual perception are associated with hallucinations in lewy body disorders
callnumber	BF309-499
title_auth	Compensatory shifts in visual perception are associated with hallucinations in Lewy body disorders
abstract	Abstract Visual hallucinations are a common, distressing, and disabling symptom of Lewy body and other diseases. Current models suggest that interactions in internal cognitive processes generate hallucinations. However, these neglect external factors. Pareidolic illusions are an experimental analogue of hallucinations. They are easily induced in Lewy body disease, have similar content to spontaneous hallucinations, and respond to cholinesterase inhibitors in the same way. We used a primed pareidolia task with hallucinating participants with Lewy body disorders (n = 16), non-hallucinating participants with Lewy body disorders (n = 19), and healthy controls (n = 20). Participants were presented with visual “noise” that sometimes contained degraded visual objects and were required to indicate what they saw. Some perceptions were cued in advance by a visual prime. Results showed that hallucinating participants were impaired in discerning visual signals from noise, with a relaxed criterion threshold for perception compared to both other groups. After the presentation of a visual prime, the criterion was comparable to the other groups. The results suggest that participants with hallucinations compensate for perceptual deficits by relaxing perceptual criteria, at a cost of seeing things that are not there, and that visual cues regularize perception. This latter finding may provide a mechanism for understanding the interaction between environments and hallucinations.
abstractGer	Abstract Visual hallucinations are a common, distressing, and disabling symptom of Lewy body and other diseases. Current models suggest that interactions in internal cognitive processes generate hallucinations. However, these neglect external factors. Pareidolic illusions are an experimental analogue of hallucinations. They are easily induced in Lewy body disease, have similar content to spontaneous hallucinations, and respond to cholinesterase inhibitors in the same way. We used a primed pareidolia task with hallucinating participants with Lewy body disorders (n = 16), non-hallucinating participants with Lewy body disorders (n = 19), and healthy controls (n = 20). Participants were presented with visual “noise” that sometimes contained degraded visual objects and were required to indicate what they saw. Some perceptions were cued in advance by a visual prime. Results showed that hallucinating participants were impaired in discerning visual signals from noise, with a relaxed criterion threshold for perception compared to both other groups. After the presentation of a visual prime, the criterion was comparable to the other groups. The results suggest that participants with hallucinations compensate for perceptual deficits by relaxing perceptual criteria, at a cost of seeing things that are not there, and that visual cues regularize perception. This latter finding may provide a mechanism for understanding the interaction between environments and hallucinations.
abstract_unstemmed	Abstract Visual hallucinations are a common, distressing, and disabling symptom of Lewy body and other diseases. Current models suggest that interactions in internal cognitive processes generate hallucinations. However, these neglect external factors. Pareidolic illusions are an experimental analogue of hallucinations. They are easily induced in Lewy body disease, have similar content to spontaneous hallucinations, and respond to cholinesterase inhibitors in the same way. We used a primed pareidolia task with hallucinating participants with Lewy body disorders (n = 16), non-hallucinating participants with Lewy body disorders (n = 19), and healthy controls (n = 20). Participants were presented with visual “noise” that sometimes contained degraded visual objects and were required to indicate what they saw. Some perceptions were cued in advance by a visual prime. Results showed that hallucinating participants were impaired in discerning visual signals from noise, with a relaxed criterion threshold for perception compared to both other groups. After the presentation of a visual prime, the criterion was comparable to the other groups. The results suggest that participants with hallucinations compensate for perceptual deficits by relaxing perceptual criteria, at a cost of seeing things that are not there, and that visual cues regularize perception. This latter finding may provide a mechanism for understanding the interaction between environments and hallucinations.
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title_short	Compensatory shifts in visual perception are associated with hallucinations in Lewy body disorders
url	https://doi.org/10.1186/s41235-017-0063-6 https://doaj.org/article/a2ac2187cf8748c7b6efc64dc83ed563 http://link.springer.com/article/10.1186/s41235-017-0063-6 https://doaj.org/toc/2365-7464
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Compensatory shifts in visual perception are associated with hallucinations in Lewy body disorders

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