Is there a generalized right hemisphere dominance for mediating cerebral activation? Evidence from a choice reaction experiment with lateralized simple warning stimuli

1989 ◽  
Vol 27 (5) ◽  
pp. 747-751 ◽  
Author(s):  
Walter Sturm ◽  
Jürgen Reul ◽  
Klaus Willmes
Keyword(s):  
Right Hemisphere ◽  
Cerebral Activation ◽  
Hemisphere Dominance

Mechanisms of right-hemisphere dominance in identifying rapidly presented letters and digits

2007 ◽  
Vol 118 (4) ◽  
pp. e106
Author(s):  
R. Verleger ◽  
S. Gebauer ◽  
M. Fritzmannova ◽  
P. Jaskowski
Keyword(s):  
Right Hemisphere ◽  
Hemisphere Dominance

Dominance of the Right Hemisphere and Role of Area 2 in Human Kinesthesia

2005 ◽  
Vol 93 (2) ◽  
pp. 1020-1034 ◽  
Author(s):  
Eiichi Naito ◽  
Per E. Roland ◽  
Christian Grefkes ◽  
H. J. Choi ◽  
Simon Eickhoff ◽  
...  
Keyword(s):  
Right Hemisphere ◽  
Anterior Part ◽  
Premotor Cortex ◽  
Superior Temporal Gyrus ◽  
Lateral Part ◽  
Left Hand ◽  
Hemisphere Dominance ◽  
The Right ◽  
Processus Styloideus ◽  
Motor Areas

We have previously shown that motor areas are engaged when subjects experience illusory limb movements elicited by tendon vibration. However, traditionally cytoarchitectonic area 2 is held responsible for kinesthesia. Here we use functional magnetic resonance imaging and cytoarchitectural mapping to examine whether area 2 is engaged in kinesthesia, whether it is engaged bilaterally because area 2 in non-human primates has strong callosal connections, which other areas are active members of the network for kinesthesia, and if there is a dominance for the right hemisphere in kinesthesia as has been suggested. Ten right-handed blindfolded healthy subjects participated. The tendon of the extensor carpi ulnaris muscles of the right or left hand was vibrated at 80 Hz, which elicited illusory palmar flexion in an immobile hand (illusion). As control we applied identical stimuli to the skin over the processus styloideus ulnae, which did not elicit any illusions (vibration). We found robust activations in cortical motor areas [areas 4a, 4p, 6; dorsal premotor cortex (PMD) and bilateral supplementary motor area (SMA)] and ipsilateral cerebellum during kinesthetic illusions (illusion-vibration). The illusions also activated contralateral area 2 and right area 2 was active in common irrespective of illusions of right or left hand. Right areas 44, 45, anterior part of intraparietal region (IP1) and caudo-lateral part of parietal opercular region (OP1), cortex rostral to PMD, anterior insula and superior temporal gyrus were also activated in common during illusions of right or left hand. These right-sided areas were significantly more activated than the corresponding areas in the left hemisphere. The present data, together with our previous results, suggest that human kinesthesia is associated with a network of active brain areas that consists of motor areas, cerebellum, and the right fronto-parietal areas including high-order somatosensory areas. Furthermore, our results provide evidence for a right hemisphere dominance for perception of limb movement.

Native and nonnative processing of Japanese pitch accent

2011 ◽  
Vol 33 (3) ◽  
pp. 623-641 ◽  
Author(s):  
XIANGHUA WU ◽  
JUNG-YUEH TU ◽  
YUE WANG
Keyword(s):  
Left Hemisphere ◽  
Right Hemisphere ◽  
Pitch Accent ◽  
Lexical Tone ◽  
Language Experience ◽  
Tone Language ◽  
Hemisphere Dominance ◽  
Nonnative Listeners ◽  
Prosodic Processing ◽  
Japanese Pitch Accent

ABSTRACTThe theoretical framework of this study is based on the prevalent debate of whether prosodic processing is influenced by higher level linguistic-specific circuits or reflects lower level encoding of physical properties. Using the dichotic listening technique, the study investigates the hemispheric processing of Japanese pitch accent by native Japanese listeners and two groups of nonnative listeners with no prior pitch accent experience but differing in their native language experience with linguistic pitch: native listeners of Mandarin (a tone language with higher linguistic functional use of pitch) and native listeners of English (a stress language with lower functional use of pitch). The overall results reveal that, for both native and nonnative listeners, the processing of Japanese pitch accent is less lateralized (compared to lexical tone processing, which has been found to be a left hemisphere property). However, detailed analysis with individual pitch accents across groups shows a right hemisphere preference for processing the high–accent–low (H*L) pattern, a left hemisphere preference for LH*, and no hemisphere dominance for LH, indicating a significant reliance on the acoustic cues. These patterns are particularly prominent with the English listeners who are least experienced with linguistic pitch. Together, the findings suggest an interplay of linguistic and acoustic aspects in the processing of Japanese pitch accent by native and nonnative listeners.

Left-Handedness among Architects: Some Facts and Speculation

1974 ◽  
Vol 38 (2) ◽  
pp. 547-550 ◽  
Author(s):  
John M. Peterson ◽  
Leonard M. Lansky
Keyword(s):  
Right Hemisphere ◽  
Future Research ◽  
Left Handedness ◽  
Left Handed ◽  
Hemisphere Dominance

Following some leads from casual observations, two studies of left-handedness among architects and architecture students confirmed that: (1) both groups tend to be more left-handed than would be “normally” expected; (2) all the left-handed students followed complex directions about drawing a spatial maze perfectly whereas over 50% of right-handed students erred. Perhaps the data relate to recent speculations about right-hemisphere dominance being associated with both left-handedness and greater spatial competence. How the generalization of these findings and similar questions relate to such study are for future research.

scholarly journals Epileptogenesis: left or right hemisphere dominance? Preliminary findings in a hospital-based population

Seizure ◽  
2001 ◽  
Vol 10 (8) ◽  
pp. 570-572 ◽  
Author(s):  
Douglas Labar ◽  
Leo Dilone ◽  
Gail Solomon ◽  
Cynthia Harden
Keyword(s):  
Right Hemisphere ◽  
Hemisphere Dominance

Laterality of Lesions and Trait-Anxiety on Working Memory Performance

2002 ◽  
Vol 94 (2) ◽  
pp. 551-558 ◽  
Author(s):  
William D. S. Killgore
Keyword(s):  
Working Memory ◽  
Left Hemisphere ◽  
Cognitive Processing ◽  
Trait Anxiety ◽  
Right Hemisphere ◽  
Digit Span ◽  
Memory Performance ◽  
Brain Lesion ◽  
Cerebral Activation ◽  
The Right

An asymmetry of anterior cerebral activation favoring the right hemisphere has been associated with dispositional negative affect including trait-anxiety, while the opposite appears true of cerebral asymmetry favoring the left hemisphere. It was hypothesized that an asymmetry of cerebral activation, as defined by scores on a measure of trait-anxiety, ipsilateral to the side of an anterior brain lesion would be associated with less efficient cognitive processing than greater activation in the hemisphere contralateral to the lesion. Patients with anterior left ( n = 16) or right ( n = 15) hemisphere lesions completed the State-Trait Anxiety Inventory and several neurocognitive tasks. Of the abilities tested, only Digit Span scores showed an interaction between side of lesion and presumed activation asymmetry. Patients with right- but not with left-hemisphere damage showed significant differences in working memory performance depending on the presumed direction of asymmetry of the two hemispheres, supporting the dual roles of the right hemisphere in affective processing and directed attention.

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