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An evidence for lack of pseudoneglect in patients with schizophrenia:An ERP study
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Abstract
Studies have reported an altered expression of pseudoneglect in patients with schizophrenia, but no
study has examined pseudoneglect in schizophrenia at the neural level. We investigated pseudoneglect
using the visual P3 event-related potential and the mental number bisection (MNB) task in 21 patients
and 25 controls. Using an oddball task, participants were asked to discriminate an infrequent (‘one’ or
‘nine’) from a frequent written number (‘five’). The P3 ERP components were delayed to the targets on
the right of the MNL (‘nine’) compared to the targets on the left (‘one’) in controls. The effect of number
magnitude on the P3 latency was not observed in the patients. In MNB task, the patients did not show
the normal leftward bias observed in healthy individuals. Our findings indicate a lack of pseudoneglect
and the presence of an anomalous brain asymmetry in schizophreni