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Selective attention deficits reflect increased genetic vulnerability to schizophrenia
Francesca M Filbey1, Timothea Toulopoulou, Robin G Morris
1Department of Psychiatry, Institute of Psychiatry, King's College, De Crespigny Park, SE5 8AF London, UK. ffilbey@themindinstitute.org
Schizophrenia Research
|February 23, 2008
Summary
Attention deficits are prominent in schizophrenia. Selective attention tasks may indicate genetic liability for schizophrenia, particularly in presumed obligate carriers (POCs).
Area of Science:
- Neuroscience
- Psychiatry
- Genetics
Background:
- Attention impairment is a key feature of schizophrenia.
- Attention deficits may serve as a genetic marker for schizophrenia vulnerability.
Purpose of the Study:
- To investigate attention deficits associated with genetic risk for schizophrenia.
- To characterize attention performance in individuals with schizophrenia, their relatives, and controls.
Main Methods:
- Compared attention performance in 55 schizophrenia patients, 95 first-degree relatives, and 61 controls.
- Assessed presumed obligate carriers (POCs, N=12) for attention deficits compared to controls.
- Utilized sustained and selective attention tasks, including the Stroop and Letter Cancellation Task.
Main Results:
- First-degree relatives did not significantly differ from controls, but attention scores showed a patient>relative>control order.
- Presumed obligate carriers (POCs) exhibited significantly poorer performance on selective attention tasks (Stroop, Letter Cancellation) than controls.
Conclusions:
- Heterogeneity among relatives may obscure attention deficits linked to genetic risk.
- Selective attention performance in presumed obligate carriers suggests it may be a reliable indicator of genetic liability for schizophrenia.
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