Neutral face and complex object neurophysiological processing deficits in long-term schizophrenia and in first hospitalized schizophrenia-spectrum individuals
| Autor: | Robert W. McCarley, Jason W. Krompinger, Dean F. Salisbury, Toshiaki Onitsuka, Spencer K. Lynn |
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| Rok vydání: | 2019 |
| Předmět: |
Adult
Male medicine.medical_specialty genetic structures Disease Electroencephalography Audiology behavioral disciplines and activities Article 050105 experimental psychology Visual processing 03 medical and health sciences 0302 clinical medicine Event-related potential Physiology (medical) medicine Humans 0501 psychology and cognitive sciences Misattribution of memory Latency (engineering) Evoked Potentials medicine.diagnostic_test business.industry General Neuroscience 05 social sciences Information processing Brain Middle Aged medicine.disease Neuropsychology and Physiological Psychology Pattern Recognition Visual Schizophrenia Female business Facial Recognition Photic Stimulation 030217 neurology & neurosurgery |
| Zdroj: | Int J Psychophysiol |
| ISSN: | 0167-8760 |
| DOI: | 10.1016/j.ijpsycho.2019.06.002 |
| Popis: | Background Face processing is impaired in long-term schizophrenia as indexed by a reduced face-related N170 event-related potential (ERP) that corresponds with volumetric decreases in right fusiform gyrus. Impairment in face processing may constitute an object-specific deficit in schizophrenia that relates to social impairment and misattribution of social signs in the disease, or the face deficit may be part of a more general deficit in complex visual processing. Further, it is not clear the degree to which face and complex object processing deficits are present early in disease course. To that end, the current study investigated face- and object-elicited N170 in long-term schizophrenia and the first hospitalized schizophrenia-spectrum. Methods ERPs were collected from 32 long-term schizophrenia patients and 32 matched controls, and from 31 first hospitalization patients and 31 matched controls. Subjects detected rarely presented butterflies among non-target neutral faces and automobiles. Results For both patient groups, the N170s to all stimuli were significantly attenuated. Despite this overall reduction, the increase in N170 amplitude to faces was intact in both patient samples. Symptoms were not correlated with N170 amplitude or latency to faces. Conclusions Information processing of complex stimuli is fundamentally impaired in schizophrenia, as reflected in attenuated N170 ERPs in both first hospitalized and long-term patients. This suggests the presence of low-level visual complex object processing deficits near disease onset that persist with disease course. |
| Databáze: | OpenAIRE |
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