Abstract
Contingent negative variation (CNV) amplitude, morphology, and duration have been studied in 370 subjects, distributed in 3 groups: controls (100 subjects), neurotics (135 subjects) and psychotics (135 subjects). Neurotics, especially those with hysterical characteristics, have a tendency to present small amplitude and Type A “field dependency” CNVs ( P > 0.05). Small amplitude or prolonged CNVs (Type III and Type IV curves with a “plateau” or “dome” aspect) occur significantly more often among psychotics than either normal or neurotic subjects ( P>0.001). It appears that psychotic patients seem able to respond only on the principle of “all or nothing” to the CNV paradigm.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Electroencephalography and Clinical Neurophysiology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
