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Face processing in schizophrenia: defining the deficit
J F Whittaker1, J F Deakin, B Tomenson
1Department of Child and Adolescent Psychiatry, Queen's Medical Centre, Nottingham.
Psychological Medicine
|April 18, 2001
Summary
Schizophrenia patients show deficits in face processing, linked to wider neuropsychological issues like visual imagery, semantic retrieval, and executive function impairments. These face recognition problems are not solely due to lower IQ.
Area of Science:
- Neuroscience
- Psychology
Background:
- Schizophrenia is associated with face processing abnormalities, but the underlying causes remain unclear.
- It is uncertain if these deficits stem from broader impairments in perception, memory, language, or executive functions.
Purpose of the Study:
- To investigate face and affect processing deficits in schizophrenia.
- To determine if these deficits are related to wider neuropsychological impairments.
Main Methods:
- Compared 26 schizophrenia patients with 23 healthy controls on neuropsychological and face/affect processing tests.
- Assessed face and non-face processing across visuo-spatial perception, recognition memory, language/naming, and executive function.
- Examined correlations with medication dosage, illness duration, and IQ.
Main Results:
- Schizophrenia patients exhibited correlated deficits in face and non-face processing, largely independent of IQ decline.
- Impaired visuo-spatial and recognition performance for faces and non-faces correlated with drug dose.
- Deficits in naming facial emotions were linked to other naming tasks, independent of medication.
Conclusions:
- Face processing deficits in schizophrenia are associated with broader neuropsychological impairments.
- These include drug-related visual imagery deficits and disease-related impairments in semantic retrieval and executive function.
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