Relation between Hemispheric Specialization and Gross Motor Control in Normal Right-Handed Children

1986 ◽  
Vol 63 (3) ◽  
pp. 1227-1231 ◽  
Author(s):  
Harriet Williams ◽  
Peter Werner ◽  
George Purgavie
Keyword(s):  
Cerebral Hemisphere ◽  
Hemispheric Specialization ◽  
Gross Motor ◽  
Projection System ◽  
Control Center ◽  
Left Cerebral Hemisphere ◽  
Processing Information ◽  
Hand Coordination ◽  
The Right ◽  
Abstract Shapes

The purpose of the present study was to investigate the nature of the relationship between gross-motor, eye-hand coordination and hemispheric specialization in normal right-handed children. Participants were 30 children, 75–99 mo. 15 boys and 15 girls performed a gross-motor eye-hand coordination task (a controlled, continuous one-handed ball bounce) and a test of hemispheric specialization. A backscreen tachistoscopic projection system was used to present letters and abstract shapes to left and right visual hemifields. A multivariate analysis of variance yielded a significant main effect for eye-hand coordination but not for sex. Follow-up analyses indicated that speed and accuracy of responses to verbal and spatial stimuli presented to the left cerebral hemisphere were significantly related to proficiency of eye-hand coordination. Data suggest that certain aspects of hemispheric specialization may be important to gross-motor eye-hand coordination in young children. Since the left cerebral hemisphere is the major control center for movements of the right side, the hemisphere which controls movements of a particular side may also assume the major responsibility for processing information needed to regulate those movements.

Sex differences in human brain asymmetry: a critical survey

1980 ◽  
Vol 3 (2) ◽  
pp. 215-227 ◽  
Author(s):  
Jeannette McGlone
Keyword(s):  
Sex Differences ◽  
Cerebral Hemisphere ◽  
Hemispheric Specialization ◽  
Brain Asymmetry ◽  
Critical Survey ◽  
Cerebral Lateralization ◽  
Language Functions ◽  
Dual Functional ◽  
Female Brain ◽  
The Right

AbstractDual functional brain asymmetry refers to the notion that in most individuals the left cerebral hemisphere is specialized for language functions, whereas the right cerebral hemisphere is more important than the left for the perception, construction, and recall of stimuli that are difficult to verbalize. In the last twenty years there have been scattered reports of sex differences in degree of hemispheric specialization. This review provides a critical framework within which two related topics are discussed: Do meaningful sex differences in verbal or spatial cerebral lateralization exist? and, if so, Is the brain of one sex more symmetrically organized than the other? Data gathered on right-handed adults are examined from clinical studies of patients with unilateral brain lesions; from dichotic listening, tachistoscopic, and sensorimotor studies of functional asymmetries in non-brain-damaged subjects; from anatomical and electrophysiological investigations, as well as from the developmental literature. Retrospective and descriptive findings predominate over prospective and experimental methodologies. Nevertheless, there is an impressive accummulation of evidence suggesting that the male brain may be more asymmetrically organized than the female brain, both for verbal and nonverbal functions. These trends are rarely found in childhood but are often significant in the mature organism.

Preliminary Report: Hemispheric Relationships in Composing

1980 ◽  
Vol 162 (2) ◽  
pp. 74-95 ◽  
Author(s):  
Benjamin M. Glassner
Keyword(s):  
Cerebral Hemisphere ◽  
Preliminary Report ◽  
Traditional Instruction ◽  
Amplitude Ratios ◽  
Left Cerebral Hemisphere ◽  
Right Cerebral Hemisphere ◽  
Left And Right ◽  
The Right

The purpose of the study reported here is to examine the right/left cerebral hemisphere relationships between writing in the extensive mode and writing in the reflexive mode. Preliminary findings suggest that writing which is focused on communicating information already familiar and formulated by the writer, characteristics of extensive composing, is accompanied by greater relative engagement of the left cerebral hemisphere as indicated by lower relative EEG amplitude ratios measured from electrodes placed symmetrically over the left and right temporal areas. Writing which is focused upon discovering meanings, which is tentative and exploratory - characteristics of reflexive composing - is accompanied by greater relative engagement of the right cerebral hemisphere. Traditional instruction has failed because it is “half-brained,” addressing only one of these modes of composing.

Generalized and Lateralized Effects of Concurrent Verbalization on a Unimanual Skill

1971 ◽  
Vol 23 (3) ◽  
pp. 341-345 ◽  
Author(s):  
Marcel Kinsbourne ◽  
Jay Cook
Keyword(s):  
Motor Control ◽  
Cerebral Hemisphere ◽  
Index Finger ◽  
Left Index Finger ◽  
Distraction Effect ◽  
Left Cerebral Hemisphere ◽  
Verbal Activity ◽  
Right Hand ◽  
Concurrent Verbalization ◽  
The Right

After practice, subjects balanced a dowel rod on the right and on the left index finger while speaking and while remaining silent. As compared to control, the verbal condition yielded shorter balancing times for the right hand, but longer ones for the left. A speculative model postulates enhancement of the practised skill by virtue of the distraction effect of the concurrent activity. This is counteracted on the right by interference with right-sided motor control by the left cerebral hemisphere due to verbal activity programmed by the same hemisphere.

Recognition of Natural Expressions of Emotion by CVA Patients with Damage to the Left or Right Hemisphere

2002 ◽  
Vol 3 (1) ◽  
pp. 42-53
Author(s):  
Rebecca Bowen ◽  
Skye McDonald
Keyword(s):  
Cerebrovascular Accident ◽  
Cerebral Hemisphere ◽  
Visual Cues ◽  
Right Hemisphere ◽  
Negative Emotions ◽  
Statistical Analyses ◽  
Left Cerebral Hemisphere ◽  
Complex Stimuli ◽  
The Right

AbstractThe present study investigated the ability of cerebrovascular accident (CVA) patients to perceive emotions portrayed by realistic stimuli. Statistical analyses demonstrated that CVA patients with damage to either the right or left cerebral hemisphere performed, on average, as well as controls did in perceiving emotions. However, a case study of one patient suggested that there may be a subset of CVA patients with right parieto-occipital damage who have deficits in the perception of negative emotions. The performance of this participant also indicated that deficits in emotion perception are ameliorated to some extent when patients are provided with realistic, complex stimuli that include a range of auditory and visual cues.

Superiority of the Left Cerebral Hemisphere in Word Recognition with Nonverbal Central Fixation

1984 ◽  
Vol 59 (3) ◽  
pp. 895-898
Author(s):  
Stephen Meredith Williams
Keyword(s):  
Visual Field ◽  
Word Recognition ◽  
Cerebral Hemisphere ◽  
Right Visual Field ◽  
Left Cerebral Hemisphere ◽  
Bilateral Presentation ◽  
Fixation Task ◽  
The Right ◽  
Central Fixation

The right visual-field advantage for bilateral presentation put forward by McKeever and Huling was investigated. The central-fixation task was varied so that in one condition this task was nonverbal. Results gave some support for scanning-type explanations in this paradigm but over-all favoured Kinsbourne's activation-and-priming account.

scholarly journals Lateralized Repetition Priming for Unfamiliar Faces

2009 ◽  
Vol 56 (3) ◽  
pp. 147-155 ◽  
Author(s):  
Douglas Martin ◽  
Louise K. Nind ◽  
C. Neil Macrae
Keyword(s):  
Visual Field ◽  
Repetition Priming ◽  
Cerebral Hemisphere ◽  
Right Hemisphere ◽  
Prior Exposure ◽  
Divided Visual Field ◽  
Left Cerebral Hemisphere ◽  
Field Methodology ◽  
The Right ◽  
Unfamiliar Faces

Repetition priming (RP) is the ability to recognize a stimulus more rapidly as a result of prior exposure to the item. Recent research examining the neuroanatomical basis of this effect has demonstrated RP for familiar faces presented to the right but not to the left cerebral hemisphere. Extending this line of enquiry, the current research considered whether similar effects emerge when unfamiliar faces are the stimuli of interest. Using a divided-visual-field methodology, RP for unfamiliar faces in the left and the right hemispheres was assessed. The results revealed that RP: (i) only emerges in the right hemisphere; (ii) is evident regardless of whether the lateralized presentation of unfamiliar faces occurs at study or at test and (iii) occurs only when hair is cropped from the faces. The theoretical implications of these findings are considered.

Left-Cerebral Hemisphere Superiority in Tachistoscopic Word-Recognition Performances

1970 ◽  
Vol 30 (3) ◽  
pp. 763-766 ◽  
Author(s):  
Walter F. McKeever ◽  
Maurice D. Huling
Keyword(s):  
Word Recognition ◽  
Left Hemisphere ◽  
Cerebral Hemisphere ◽  
Right Hemisphere ◽  
Left Cerebral Hemisphere ◽  
Right Cerebral Hemisphere ◽  
Recognition Ability ◽  
Efficient Route ◽  
The Right ◽  
The Brain

Under conditions of monocular unihemispheric projection of word stimuli to the brain, 10 normal Ss uniformly showed superior word recognition ability of the left, as opposed to the right, cerebral hemisphere. Left-hemisphere recognitions were significantly more frequent than right-hemisphere recognitions for both eyes, but the extent of left-hemisphere superiority was significantly greater for the left eye. The results support the hypothesis that words projected to the right hemisphere traverse a less efficient route to the language centers of the left hemisphere.

Using ECT to Study Hemispheric Specialization for Sequential Processes

1980 ◽  
Vol 137 (2) ◽  
pp. 119-125 ◽  
Author(s):  
M. Horan ◽  
R. Ashton ◽  
J. Minto
Keyword(s):  
Electroconvulsive Shock ◽  
Cerebral Hemisphere ◽  
Hemispheric Specialization ◽  
Shock Therapy ◽  
Time Dependent ◽  
Unexpected Finding ◽  
Cognitive Tests ◽  
Left Cerebral Hemisphere ◽  
Before And After ◽  
Sequential Processes

SummaryTwo studies are reported, citing the effects of unilateral versus bilateral electroconvulsive shock therapy on the performance of short cognitive tests. In Study 1, seven tests were administered before and after three treatment sessions The most interesting finding was that performance improved significantly on the Knox Cube Imitation test following right unilateral shock. Study 2 replicated this unexpected finding. These results were interpreted as demonstrating that the left cerebral hemisphere is specialized for the processing of sequential time-dependent information.

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