Hallucination Proneness Alters Sensory Feedback Processing in Self-voice Production

Author:

Duggirala Suvarnalata Xanthate123ORCID,Schwartze Michael1,Goller Lisa K1,Linden David E J34,Pinheiro Ana P2,Kotz Sonja A1

Affiliation:

1. Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University , Maastricht , Netherlands

2. Department of Psychology, Faculty of Psychology, University of Lisbon , Lisbon , Portugal

3. Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Faculty of Health and Medical Sciences, Maastricht University , Maastricht , Netherlands

4. Maastricht University Medical Center , Maastricht , Netherlands

Abstract

Abstract Background Sensory suppression occurs when hearing one’s self-generated voice, as opposed to passively listening to one’s own voice. Quality changes in sensory feedback to the self-generated voice can increase attentional control. These changes affect the self-other voice distinction and might lead to hearing voices in the absence of an external source (ie, auditory verbal hallucinations). However, it is unclear how changes in sensory feedback processing and attention allocation interact and how this interaction might relate to hallucination proneness (HP). Study Design Participants varying in HP self-generated (via a button-press) and passively listened to their voice that varied in emotional quality and certainty of recognition—100% neutral, 60%–40% neutral-angry, 50%–50% neutral-angry, 40%–60% neutral-angry, 100% angry, during electroencephalography (EEG) recordings. Study Results The N1 auditory evoked potential was more suppressed for self-generated than externally generated voices. Increased HP was associated with (1) an increased N1 response to the self- compared with externally generated voices, (2) a reduced N1 response for angry compared with neutral voices, and (3) a reduced N2 response to unexpected voice quality in sensory feedback (60%–40% neutral-angry) compared with neutral voices. Conclusions The current study highlights an association between increased HP and systematic changes in the emotional quality and certainty in sensory feedback processing (N1) and attentional control (N2) in self-voice production in a nonclinical population. Considering that voice hearers also display these changes, these findings support the continuum hypothesis.

Funder

BIAL Foundation

Publisher

Oxford University Press (OUP)

Reference98 articles.

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