10.6084/m9.figshare.11474781.v1
Daniela Hubl
Daniela
Hubl
Nicolas Moor
Nicolas
Moor
Jochen Kindler
Jochen
Kindler
Mara Kottlow
Mara
Kottlow
Thomas Dierks
Thomas
Dierks
Thomas Koenig
Thomas
Koenig
Speed, Accuracy, and Efficiency of Judgements of Coincidence between Speech Acts and Auditory Perception during a Delayed Auditory Feedback Paradigm: A Behavioral Study in Patients with Schizophrenia
Brill Online
2020
corollary discharge
efference copy
prediction
first-rank symptoms
Sensory Processes, Perception and Performance
2020-01-15 07:16:13
Journal contribution
https://brill.figshare.com/articles/journal_contribution/Speed_Accuracy_and_Efficiency_of_Judgements_of_Coincidence_between_Speech_Acts_and_Auditory_Perception_during_a_Delayed_Auditory_Feedback_Paradigm_A_Behavioral_Study_in_Patients_with_Schizophrenia/11474781
<p>The inability to differentiate between one’s actions
and their consequences from sensory inputs originating from an alien source
might cause classical first-rank symptoms in schizophrenia, such as
audio-verbal hallucinations (AVH). We aimed to determine whether patients with
or without AVH perform differently in a task challenging the audio-verbal
self-monitoring system compared to controls. Controls (<i>n</i> = 21) and schizophrenia
patients with <a>(AH,
<i>n</i> = 11) and without AVH (NH, </a><a>[AUTHOR1]</a> <i>n</i> = 9) participated. Subjects had to discern whether
they heard a sound they had just uttered with or without delay. Reaction time,
accuracy as well as sensitivity and response bias were compared between groups.
There were no group effects in reaction time. Controls were significantly more
accurate in the detection of delays compared to AH and to NH. However, the most
salient observation was that these deficits were not uniformly present, but were
selectively elicited by the delay, reducing patients’ response accuracy to
chance level. The analysis of the data based on signal detection theory
revealed a significant drop in sensitivity in both patient groups compared to
the controls, and a response bias:
Particularly the patients with AVH seemed to be biased not to consider a
delay, rather than falsely signaling a delay. Such a deficit may blur the
distinction between external events and self-initiated actions, thus eventually
interfering with the patients’ sense of agency. </p>
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<p> <a>[AUTHOR1]</a>TS: Query for Authors: These abbreviations are used below without
explanation; is it correct to add them here?</p>
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