Right hemisphere specialization in psychological function.

2004 ◽  
pp. 431-446
Author(s):  
Jerre Levy
Keyword(s):  
Right Hemisphere ◽  
Psychological Function ◽  
Hemisphere Specialization

Right-Hemisphere Specialization for Contour Grouping

2014 ◽  
Vol 61 (5) ◽  
pp. 331-339 ◽  
Author(s):  
Gregor Volberg
Keyword(s):  
Right Hemisphere ◽  
Contour Detection ◽  
Global Processing ◽  
Detection Accuracy ◽  
Frequency Spectra ◽  
Visual Hemifield ◽  
Spatial Frequencies ◽  
A Chain ◽  
The Right ◽  
Hemisphere Specialization

Previous studies often revealed a right-hemisphere specialization for processing the global level of compound visual stimuli. Here we explore whether a similar specialization exists for the detection of intersected contours defined by a chain of local elements. Subjects were presented with arrays of randomly oriented Gabor patches that could contain a global path of collinearly arranged elements in the left or in the right visual hemifield. As expected, the detection accuracy was higher for contours presented to the left visual field/right hemisphere. This difference was absent in two control conditions where the smoothness of the contour was decreased. The results demonstrate that the contour detection, often considered to be driven by lateral coactivation in primary visual cortex, relies on higher-level visual representations that differ between the hemispheres. Furthermore, because contour and non-contour stimuli had the same spatial frequency spectra, the results challenge the view that the right-hemisphere advantage in global processing depends on a specialization for processing low spatial frequencies.

scholarly journals Handedness and index finger movements performed on a small touchscreen

2016 ◽  
Vol 115 (2) ◽  
pp. 858-867 ◽  
Author(s):  
Tomoko Aoki ◽  
Gil Rivlis ◽  
Marc H. Schieber
Keyword(s):  
Right Hemisphere ◽  
Index Finger ◽  
Impedance Control ◽  
Tracking Task ◽  
Left Index Finger ◽  
Time Lags ◽  
Left Hand ◽  
Left Handed ◽  
Right Hand ◽  
Hemisphere Specialization

Many studies of right/left differences in motor performance related to handedness have employed tasks that use arm movements or combined arm and hand movements rather than movements of the fingers per se, the well-known exception being rhythmic finger tapping. We therefore explored four simple tasks performed on a small touchscreen with relatively isolated movements of the index finger. Each task revealed a different right/left performance asymmetry. In a step-tracking Target Task, left-handed subjects showed greater accuracy with the index finger of the dominant left hand than with the nondominant right hand. In a Center-Out Task, right-handed subjects produced trajectories with the nondominant left hand that had greater curvature than those produced with the dominant right hand. In a continuous Circle Tracking Task, slips of the nondominant left index finger showed higher jerk than slips of the dominant right index finger. And in a continuous Complex Tracking Task, the nondominant left index finger showed shorter time lags in tracking the relatively unpredictable target than the dominant right index finger. Our findings are broadly consistent with previous studies indicating left hemisphere specialization for dynamic control and predictable situations vs. right hemisphere specialization for impedance control and unpredictable situations, the specialized contributions of the two hemispheres being combined to different degrees in the right vs. left hands of right-handed vs. left-handed individuals.

Right hemisphere specialization for intensity discrimination of musical and speech sounds

2005 ◽  
Vol 43 (13) ◽  
pp. 1916-1923 ◽  
Author(s):  
Alfredo Brancucci ◽  
Claudio Babiloni ◽  
Paolo Maria Rossini ◽  
Gian Luca Romani
Keyword(s):  
Right Hemisphere ◽  
Intensity Discrimination ◽  
Speech Sounds ◽  
Hemisphere Specialization

Hemispheric Specialization and Cognitive Development: Implications for Mathematics Education

1978 ◽  
Vol 9 (1) ◽  
pp. 20-32
Author(s):  
Grayson H. Wheatley ◽  
Robert Mitchell ◽  
Robert L. Frankland ◽  
Rosemarie Kraft
Keyword(s):  
Left Hemisphere ◽  
Hemispheric Asymmetry ◽  
Right Hemisphere ◽  
Mathematics Curriculum ◽  
Hemispheric Specialization ◽  
Brain Hemispheres ◽  
Spatial Tasks ◽  
Concrete Operational ◽  
The Right ◽  
Hemisphere Specialization

Evidence is presented for hemisphere specialization of the two brain hemispheres: the left hemisphere specialized for logico-analytic tasks and the right hemisphere, visuo-spatial tasks. A hypothesis is put forth for the emergence of the specialization that suggests a shift from predominant right hemisphere processing in infancy to predominant left hemisphere processing in adulthood. Results of the studies reviewed suggest the emergence of concrete-operational thought as the left hemisphere becomes capable of processing logical tasks. Electroencephalography seems particularly useful in determining specialization and mapping changes in hemispheric asymmetry. Implications for school mathematics curriculum are presented.

scholarly journals Effects of side-dominance on knee joint proprioceptive target-matching asymmetries

2018 ◽  
Vol 105 (3) ◽  
pp. 257-265 ◽  
Author(s):  
K Galamb ◽  
B Szilágyi ◽  
OM Magyar ◽  
T Hortobágyi ◽  
R Nagatomi ◽  
...  
Keyword(s):  
Knee Joint ◽  
Right Hemisphere ◽  
Position Sense ◽  
Matching Task ◽  
Isokinetic Dynamometer ◽  
Absolute Position ◽  
Position Errors ◽  
Side Dominance ◽  
Target Matching ◽  
Hemisphere Specialization

Aims Right- and left-side-dominant individuals reveal target-matching asymmetries between joints of the dominant and non-dominant upper limbs. However, it is unclear if such asymmetries are also present in lower limb’s joints. We hypothesized that right-side-dominant participants perform knee joint target-matching tasks more accurately with their non-dominant leg compared to left-side-dominant participants. Methods Participants performed position sense tasks using each leg by moving each limb separately and passively on an isokinetic dynamometer. Results Side-dominance affected (p < 0.05) knee joint absolute position errors only in the non-dominant leg but not in the dominant leg: right-side-dominant participants produced less absolute position errors (2.82° ± 0.72°) with the non-dominant leg compared to left-side-dominant young participants (3.54° ± 0.33°). Conclusions In conclusion, right-side-dominant participants tend to perform a target-matching task more accurately with the non-dominant leg compared to left-side-dominant participants. Our results extend the literature by showing that right-hemisphere specialization under proprioceptive target-matching tasks may be not evident at the lower limb joints.

Is right hemisphere specialization for face discrimination specific to humans?

2000 ◽  
Vol 12 (2) ◽  
pp. 731-741 ◽  
Author(s):  
Kevin D. Broad ◽  
Michael L. Mimmack ◽  
Keith M. Kendrick
Keyword(s):  
Right Hemisphere ◽  
Hemisphere Specialization

Right Hemisphere Language Operations

2000 ◽  
Vol 6 (1) ◽  
pp. 102-103
Author(s):  
Lee X. Blonder
Keyword(s):  
Problem Solving ◽  
Language Comprehension ◽  
Right Hemisphere ◽  
Communicative Competence ◽  
Discourse Processing ◽  
Discourse Comprehension ◽  
Sentence Level ◽  
Verbal Messages ◽  
The Right ◽  
Hemisphere Specialization

This book contains an introduction by the editors and 15 chapters that are divided into three parts. Part I is entitled “Decoding Speech Sounds and Individual Words”; part II: “Lexical and Sentence-Level Semantics”; and Part III: “Discourse Processing and Problem Solving.” Each part concludes with a commentary by the editors. As these section titles show, the book provides evidence that the right hemisphere is involved with functions more commonly ascribed to the left hemisphere, namely, phonology, morphology, and semantics. In addition, several chapters are devoted to aspects of communicative competence commonly associated with right hemisphere specialization, such as discourse comprehension and the appreciation of emotional verbal messages. Previous works, such as Language, Aphasia, and the Right Hemisphere by Chris Code (1987), provide a more basic introduction to what was then known of right hemisphere communicative competence. The Beeman and Chiarello volume is directed towards a more sophisticated target audience familiar with neurolinguistic models of hemispheric contributions to language comprehension.

Developmental Changes for Hemispheric Specialization of Tactile Recognition by Normal Children

1980 ◽  
Vol 51 (1) ◽  
pp. 325-326 ◽  
Author(s):  
Mayumi Yamamoto
Keyword(s):  
Spatial Ability ◽  
Middle Childhood ◽  
Right Hemisphere ◽  
Hemispheric Specialization ◽  
Visual Display ◽  
Developmental Changes ◽  
Normal Children ◽  
Left Hand ◽  
Tactile Stimuli ◽  
Hemisphere Specialization

42 normal children aged from 8 to 12 yr. identified tactile stimuli in a visual display. The results indicated the left-hand (right hemisphere) specialization for tactile-spatial ability develops with increasing age in middle childhood.

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