"Seeing Rain": Integrating phenomenological and Bayesian predictive coding approaches to visual hallucinations and self-disturbances (Ichstörungen) in schizophrenia.
Conscious Cogn
; 73: 102757, 2019 08.
Article
in En
| MEDLINE
| ID: mdl-31284176
ABSTRACT
We present a schizophrenia patient who reports "seeing rain" with attendant somatosensory features which separate him from his surroundings. Because visual/multimodal hallucinations are understudied in schizophrenia, we examine a case history to determine the role of these hallucinations in self-disturbances (Ichstörungen). Developed by the early Heidelberg School, self-disturbances comprise two components 1. The self experiences its own automatic processing as alien to self in a split-off, "doubled-I." 2. In "I-paralysis," the disruption to automatic processing is now outside the self in omnipotent agents. Self-disturbances (as indicated by visual/multimodal hallucinations) involve impairment in the ability to predict moment-to-moment experiences in the ongoing perception-action cycle. The phenomenological approach to subjective experience of self-disturbances complements efforts to model psychosis using the computational framework of hierarchical predictive coding. We conclude that self-disturbances play an adaptive, compensatory role following the uncoupling of perception and action, and possibly, other low-level perceptual anomalies.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Schizophrenia
/
Ego
/
Hallucinations
Type of study:
Etiology_studies
/
Prognostic_studies
/
Qualitative_research
/
Risk_factors_studies
Limits:
Humans
Language:
En
Journal:
Conscious Cogn
Journal subject:
PSICOFISIOLOGIA
/
PSICOLOGIA
Year:
2019
Document type:
Article
Affiliation country: