Schizophrenia and Spectral Analysis of the Visual Evoked Potential Journal Articles

abstract

• SummaryPower spectral analysis was performed on the visual evoked potentials (VEPs) recorded in response to flashes of different intensity in both unmedicated schizophrenic and normal subjects. At occipital locations (01, 02), schizophrenics showed less power than normals in the 10–14 Hz frequency range. In the 18–22 Hz range, schizophrenics showed under-activation in the left hemisphere and over-activation in the right. At temporal locations (T3, T4), schizophrenics showed abnormal (left greater than right) hemisphere patterns of activation in 10–14 Hz and 18–22 Hz ranges. There were no group differences in relationships between power and intensity changes at vertex (Cz). The results suggest abnormal cortical-subcortical interactions during analysis of visual information in schizophrenia.

authors

• Jutai, JW
• Gruzelier, JH
• Connolly, John
• Manchanda, R
• Hirsch, SR

status

• published 

publication date

• November 1984

has subject area

• 11 Medical and Health Sciences (FoR)
• 17 Psychology and Cognitive Sciences (FoR)
• Adult (MeSH)
• Electroencephalography (MeSH)
• Evoked Potentials, Visual (MeSH)
• Female (MeSH)
• Humans (MeSH)
• Male (MeSH)
• Occipital Lobe (MeSH)
• Photic Stimulation (MeSH)
• Psychiatry (Science Metrix)
• Schizophrenia (MeSH)
• Temporal Lobe (MeSH)

published in

• The British journal of psychiatry. Supplement  Journal

keywords

• Adult
• Electroencephalography
• Evoked Potentials, Visual
• Female
• Humans
• Male
• Occipital Lobe
• Photic Stimulation
• Schizophrenia
• Temporal Lobe

Digital Object Identifier (DOI)

• 10.1192/bjp.145.5.496

PubMed ID

• 6498416

start page

• 496

end page

• 501

volume

• 145

issue

• 5