You need JavaScript to view this

Human cerebral asymmetries evaluated by computed tomography

Abstract

The handedness of seventy-five persons without evidence of neurological disease, was assessed with a standardised test. An analysis of the CT scans of the same persons was performed to determine (1) presence and lateralisation of frontal and occipital 'petalia', (2) width of frontal and occipital lobes of each hemisphere, (3) direction of straight sinus deviation. Results suggest that handedness and cerebral asymmetries are independent variables. There were no significant differences between right-handers and non-right handers. Also there was no significant differences between strongly left-handed and ambidextrous individuals, nor were there differences between right-handers with or without family history of left-handedness. Irrespective of handedness, left occipital 'petalia' was more common than right (p<0.01), right frontal petalia was more common than left (p<0.01), and straight sinus deviation was more commonly toward the right. The study does not support the concept that cerebral 'symmetry' or 'reverse asymmetry' are associated with left-handedness or ambidexterity. The noted asymmetries are more likely to be direct correlates of cerebral language dominance, than of handedness. Outside forces acting on the bone may also contribute to the asymmetries. CT scan may be of value as a direct predictor of cerebral dominance.
Authors:
Chang Chui, H; Damasio, A R [1] 
  1. Iowa Univ., Iowa City (USA)
Publication Date:
Oct 01, 1980
Product Type:
Journal Article
Reference Number:
AIX-12-596048; EDB-81-059095
Resource Relation:
Journal Name: J. Neurol., Neurosurg., Psychiatr.; (United Kingdom); Journal Volume: 43:10
Subject:
59 BASIC BIOLOGICAL SCIENCES; 62 RADIOLOGY AND NUCLEAR MEDICINE; CEREBRUM; ANATOMY; COMPUTERIZED TOMOGRAPHY; ASYMMETRY; HANDS; MAN; NEUROLOGY; SKULL; ANIMALS; BODY; BODY AREAS; BRAIN; CENTRAL NERVOUS SYSTEM; DIAGNOSTIC TECHNIQUES; LIMBS; MAMMALS; MEDICINE; NERVOUS SYSTEM; ORGANS; PRIMATES; SKELETON; TOMOGRAPHY; VERTEBRATES; 550800* - Morphology; 550602 - Medicine- External Radiation in Diagnostics- (1980-)
OSTI ID:
6528603
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: JNNPA
Submitting Site:
INIS
Size:
Pages: 873-878
Announcement Date:
Apr 01, 1981

Citation Formats

Chang Chui, H, and Damasio, A R. Human cerebral asymmetries evaluated by computed tomography. United Kingdom: N. p., 1980. Web.
Chang Chui, H, &amp; Damasio, A R. Human cerebral asymmetries evaluated by computed tomography. United Kingdom.
Chang Chui, H, and Damasio, A R. 1980. "Human cerebral asymmetries evaluated by computed tomography." United Kingdom.
@misc{etde_6528603,
title = {Human cerebral asymmetries evaluated by computed tomography}
author = {Chang Chui, H, and Damasio, A R}
abstractNote = {The handedness of seventy-five persons without evidence of neurological disease, was assessed with a standardised test. An analysis of the CT scans of the same persons was performed to determine (1) presence and lateralisation of frontal and occipital 'petalia', (2) width of frontal and occipital lobes of each hemisphere, (3) direction of straight sinus deviation. Results suggest that handedness and cerebral asymmetries are independent variables. There were no significant differences between right-handers and non-right handers. Also there was no significant differences between strongly left-handed and ambidextrous individuals, nor were there differences between right-handers with or without family history of left-handedness. Irrespective of handedness, left occipital 'petalia' was more common than right (p<0.01), right frontal petalia was more common than left (p<0.01), and straight sinus deviation was more commonly toward the right. The study does not support the concept that cerebral 'symmetry' or 'reverse asymmetry' are associated with left-handedness or ambidexterity. The noted asymmetries are more likely to be direct correlates of cerebral language dominance, than of handedness. Outside forces acting on the bone may also contribute to the asymmetries. CT scan may be of value as a direct predictor of cerebral dominance.}
journal = []
volume = {43:10}
journal type = {AC}
place = {United Kingdom}
year = {1980}
month = {Oct}
}