Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Hemispheric functioning in paranoid and nonparanoid schizophrenia.

A K Pic'l, P A Magaro, E A Wade

    Biological Psychiatry
    |December 1, 1979
    PubMed
    Summary

    Schizophrenia subtypes show distinct brain hemisphere processing. Nonparanoid schizophrenics struggled with dot enumeration due to impaired bilateral integration, unlike paranoid schizophrenics and controls.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Personality types and hetero- versus auto-hypnosis.

    Journal of personality and social psychology·1989
    Same author

    The effect of analytic versus holistic encoding instructions on hemispheric superiority.

    Cortex; a journal devoted to the study of the nervous system and behavior·1989
    Same author

    Effects of mood and severity on memory processes in depression and mania.

    Psychological bulletin·1987
    Same author

    Use of the SADS--C as a diagnostic and symptom severity measure.

    Journal of consulting and clinical psychology·1986
    Same author

    Developmental functions in a chronic psychiatric population: diagnosis.

    Genetic psychology monographs·1984
    Same author

    Psychosis and schizophrenia.

    Nebraska Symposium on Motivation. Nebraska Symposium on Motivation·1984

    Area of Science:

    • Neuroscience
    • Cognitive Psychology
    • Psychiatry

    Background:

    • Schizophrenia involves complex cognitive deficits.
    • Hemispheric specialization plays a role in cognitive tasks.
    • Different schizophrenia subtypes may exhibit unique processing patterns.

    Purpose of the Study:

    • To investigate hemispheric processing differences in paranoid and nonparanoid schizophrenia.
    • To compare information-processing strategies between schizophrenia subtypes and control groups.
    • To examine the relationship between cognitive tasks and brain hemisphere function in schizophrenia.

    Main Methods:

    • Tachistoscopic presentation of letter-naming (left hemisphere) and dot enumeration (right hemisphere) tasks.
    • Inclusion of paranoid schizophrenics, nonparanoid schizophrenics, psychiatric controls, and normal subjects.
    • Analysis of information-processing modes (serial vs. automatic) and accuracy across tasks.

    Main Results:

    • All groups showed higher accuracy in letter identification with left hemisphere presentation; education level influenced this.
    • No hemisphere effect was observed for dot enumeration, but significant group differences emerged.
    • Paranoid schizophrenics and controls used serial processing for dots, decreasing accuracy with increased frame size.
    • Nonparanoid schizophrenics employed automatic processing, maintaining consistent accuracy across dot sizes.

    Conclusions:

    • Nonparanoid schizophrenics' poorer dot enumeration performance is linked to difficulties in bilateral processing and interhemispheric integration.
    • Cognitive processing deficits in schizophrenia subtypes are associated with specific patterns of hemispheric engagement.
    • Findings highlight distinct neurocognitive profiles in paranoid versus nonparanoid schizophrenia.

    Related Experiment Videos