Abstract:
:Impairments on neuropsychological and eye movement tasks have been demonstrated in schizophrenic patients and also reported in their unaffected relatives. However, it is not clear to what extent these phenotypes overlap. This study examined the relationship between specific eye movement and neuropsychological measures. The relationship between performance on eye movement and neuropsychological tasks was measured in 79 schizophrenic patients (63% from multiply affected families), 129 of their healthy first-degree relatives, and 72 normal controls. Antisaccade scores were correlated with most measures of neurocognitive functioning, and this correlation was strongest in schizophrenic patients in all cases. In the schizophrenic patients, but not their relatives or controls, the antisaccade distractibility error (ADE) score correlated significantly with current intelligence, verbal memory (immediate and delayed recall), and associative learning. In the case of crystallised IQ and delayed verbal memory, smaller correlations were present in unaffected relatives, although neither survived Bonferroni correction. Smooth pursuit performance was unrelated to any neuropsychological measure. Our study suggests that antisaccade errors are likely to represent part of a generalized neuropsychological deficit in schizophrenia.
journal_name
Psychiatry Resjournal_title
Psychiatry researchauthors
Zanelli J,MacCabe J,Toulopoulou T,Walshe M,McDonald C,Murray Rdoi
10.1016/j.psychres.2008.05.008subject
Has Abstractpub_date
2009-08-15 00:00:00pages
193-7issue
3eissn
0165-1781issn
1872-7123pii
S0165-1781(08)00159-5journal_volume
168pub_type
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