When one's sense of agency goes wrong: absent modulation of time perception by voluntary actions and reduction of perceived length of intervals in passivity symptoms in schizophrenia

K.T. Graham-Schmidt, Mathew Martin-Iverson, N.P. Holmes, Flavie Waters

Research output: Contribution to journal › Article

6 Citations (Scopus)
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Abstract

© 2016Passivity symptoms in schizophrenia are characterised by an absence of agency for actions, thoughts and other somatic experiences. Time perception and intentional binding have both been linked to agency and schizophrenia but have not been examined in passivity symptoms. Time perception and intentional binding were assessed in people with schizophrenia (n = 15 with, n = 24 without passivity symptoms) and 43 healthy controls using an interval estimation procedure (200, 400 and 600 ms intervals) with active, passive and observed movements. People with passivity symptoms did not display action-modulation of time perception, while those without passivity symptoms estimated intervals to be the same after active and observed movements. Additionally, both clinical samples reported intervals to be shorter with increasing interval length. We propose that impaired predictive processes may produce an overreliance on external cues and, together with shorter perceived intervals, lead to the subjective loss of agency.
Original languageEnglish
Pages (from-to)9-23
Number of pages15
JournalConsciousness and Cognition
Volume45
Early online date18 Aug 2016
DOIs
Publication statusPublished - Oct 2016

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Time Perception
Schizophrenia
Cues
Modulation
Sense of Agency
Voluntary Action
Length
Passivity

Cite this

Graham-Schmidt, K.T. ; Martin-Iverson, Mathew ; Holmes, N.P. ; Waters, Flavie. / When one's sense of agency goes wrong : absent modulation of time perception by voluntary actions and reduction of perceived length of intervals in passivity symptoms in schizophrenia. In: Consciousness and Cognition. 2016 ; Vol. 45. pp. 9-23.
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Graham-Schmidt, KT, Martin-Iverson, M, Holmes, NP & Waters, F 2016, 'When one's sense of agency goes wrong: absent modulation of time perception by voluntary actions and reduction of perceived length of intervals in passivity symptoms in schizophrenia' Consciousness and Cognition, vol. 45, pp. 9-23. https://doi.org/10.1016/j.concog.2016.08.006

When one's sense of agency goes wrong : absent modulation of time perception by voluntary actions and reduction of perceived length of intervals in passivity symptoms in schizophrenia. / Graham-Schmidt, K.T.; Martin-Iverson, Mathew; Holmes, N.P.; Waters, Flavie.

In: Consciousness and Cognition, Vol. 45, 10.2016, p. 9-23.

Research output: Contribution to journal › Article

TY - JOUR

T1 - When one's sense of agency goes wrong

T2 - absent modulation of time perception by voluntary actions and reduction of perceived length of intervals in passivity symptoms in schizophrenia

AU - Graham-Schmidt, K.T.

AU - Martin-Iverson, Mathew

AU - Holmes, N.P.

AU - Waters, Flavie

PY - 2016/10

Y1 - 2016/10

N2 - © 2016Passivity symptoms in schizophrenia are characterised by an absence of agency for actions, thoughts and other somatic experiences. Time perception and intentional binding have both been linked to agency and schizophrenia but have not been examined in passivity symptoms. Time perception and intentional binding were assessed in people with schizophrenia (n = 15 with, n = 24 without passivity symptoms) and 43 healthy controls using an interval estimation procedure (200, 400 and 600 ms intervals) with active, passive and observed movements. People with passivity symptoms did not display action-modulation of time perception, while those without passivity symptoms estimated intervals to be the same after active and observed movements. Additionally, both clinical samples reported intervals to be shorter with increasing interval length. We propose that impaired predictive processes may produce an overreliance on external cues and, together with shorter perceived intervals, lead to the subjective loss of agency.

AB - © 2016Passivity symptoms in schizophrenia are characterised by an absence of agency for actions, thoughts and other somatic experiences. Time perception and intentional binding have both been linked to agency and schizophrenia but have not been examined in passivity symptoms. Time perception and intentional binding were assessed in people with schizophrenia (n = 15 with, n = 24 without passivity symptoms) and 43 healthy controls using an interval estimation procedure (200, 400 and 600 ms intervals) with active, passive and observed movements. People with passivity symptoms did not display action-modulation of time perception, while those without passivity symptoms estimated intervals to be the same after active and observed movements. Additionally, both clinical samples reported intervals to be shorter with increasing interval length. We propose that impaired predictive processes may produce an overreliance on external cues and, together with shorter perceived intervals, lead to the subjective loss of agency.

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DO - 10.1016/j.concog.2016.08.006

M3 - Article

VL - 45

SP - 9

EP - 23

JO - Consciousness and Cognition

JF - Consciousness and Cognition

SN - 1053-8100

ER -

Graham-Schmidt KT, Martin-Iverson M, Holmes NP, Waters F. When one's sense of agency goes wrong: absent modulation of time perception by voluntary actions and reduction of perceived length of intervals in passivity symptoms in schizophrenia. Consciousness and Cognition. 2016 Oct;45:9-23. https://doi.org/10.1016/j.concog.2016.08.006

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