Cerebral hemispheric asymmetry revisited: effects of handedness, gender and schizophrenia measured by radius of gyration in magnetic resonance images

SynopsisAbnormal patterns of cerebral hemispheric asymmetry have been inconsistently reported in association with schizophrenia. Radius of gyration (Rg) is a measure of the mean dispersion of points in a radially organized structure about that structure's centre of gravity. We developed computerized methods for estimating Rg of the magnetic resonance image (MRI) boundary between cortex and subcortex, and applied these methods to measurement of cerebral hemispheric asymmetry in 37 schizophrenics (SZs) and 30 controls (CONs). In right-handed CONs, Rg of right brain boundaries was significantly greater than Rg of left brain boundaries; in left-handed CONs, Rg of left brain boundaries was significantly greater than Rg of right brain boundaries. In right-handed males (both SZ and CON), there were significant differences in Rg between hemispheres; whereas in females (both SZ and CON) there were no such differences. Right-handed male SZs (N = 26) were distinguished by reversal of the right-handed male CON pattern of interhemispheric difference in Rg, and by global reduction in Rg of right brain boundaries. There was no evidence for significant abnormality of Rg in right-handed female SZs (N = 7). These findings suggest an important interactive effect of gender and schizophrenia on lateralized cerebral structure.

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Handedness affects Emotional Valence Asymmetry

Perceptual and Motor Skills ◽

10.2466/pms.1989.68.2.435 ◽

1989 ◽

Vol 68 (2) ◽

pp. 435-441 ◽

Cited By ~ 9

Author(s):

Richard A. McFarland ◽

Robert Kennison

Keyword(s):

Negative Affect ◽

Hemispheric Asymmetry ◽

Emotional Responses ◽

Emotional Valence ◽

Left Handed ◽

Two Factors ◽

Left And Right ◽

The Asymmetry ◽

The Right ◽

Cerebral Processing

Music was played monaurally to 80 right-handed and 80 left-handed subjects. Right-handers reported more positive and less negative affect if the music was to the right ear. Left-handers reported experiencing more positive and less negative affect during music to the left ear. The hand × ear interaction was significant. The valence of emotional responses to the music seems influenced by a combination of at least two factors, (1) differences between left- and right-handers in the cerebral processing of emotional valence and (2) differences in the processing of emotional valence within each handedness group depending upon which hemisphere was initially most strongly engaged by the music. These results partially corroborate and extend the findings of previous studies in which briefer stimuli were presented tachistoscopically or dichotically. It is concluded that, while there is hemispheric asymmetry in the processing of emotional valence, the direction of the asymmetry may be associated with the handedness of the subjects.

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Orientation and lateralized cue use in pigeons navigating a large indoor environment

Journal of Experimental Biology ◽

10.1242/jeb.205.12.1795 ◽

2002 ◽

Vol 205 (12) ◽

pp. 1795-1805 ◽

Cited By ~ 1

Author(s):

Helmut Prior ◽

Frank Lingenauber ◽

Jörg Nitschke ◽

Onur Güntürkün

Keyword(s):

Reference Frame ◽

Brain Lateralization ◽

Spatial Cues ◽

Brain Hemisphere ◽

Brain Hemispheres ◽

Left Brain ◽

Right Brain ◽

Starting Location ◽

The Right ◽

Global Reference Frame

SUMMARY The pigeon's use of different visuo-spatial cues was studied under controlled laboratory conditions that simulated analogous aspects of a homing situation. The birds first learned the route to a goal that was not visible from the starting location, but became visible as it was approached. Birds could orientate within a mainly geometric global reference frame, using prominent landmarks within their range, or by `piloting' along local cues. After learning the route, the birds were tested from familiar and unfamiliar release points, and several aspects of the available cues were varied systematically. The study explored the contribution of the left and right brain hemispheres by performing tests with the right or left eye occluded. The results show that pigeons can establish accurate bearings towards a non-visible goal by using a global reference frame only. Furthermore, there was a peak of searching activity at the location predicted by the global reference frame. Search at this location and directedness of the bearings were equally high with both right and left eye, suggesting that both brain hemispheres have the same competence level for these components of the task. A lateralization effect occurred when prominent landmarks were removed or translated. While the right brain hemisphere completely ignored such changes,the left brain hemisphere was distracted by removal of landmarks. After translation of landmarks, the left but not the right brain hemisphere allocated part of the searching activity to the site predicted by the new landmark position. The results show that a mainly geometric global visual reference frame is sufficient to determine exact bearings from familiar and unfamiliar release points. Overall, the results suggest a model of brain lateralization with a well-developed global spatial reference system in either hemisphere and an extra capacity for the processing of object features in the left brain.

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Experience of The Rehabilitation for Sign Language Aphasia due to The Damage of The Right Brain in A Left-handed Deaf Japanese Signer

Higher Brain Function Research ◽

10.2496/hbfr.40.393 ◽

2020 ◽

Vol 40 (3) ◽

pp. 393-398

Author(s):

Miwa Honda ◽

Yoshihiro Kushihashi ◽

Hirokazu Kawano ◽

Masako Hayashida ◽

Megumi Shimodozono

Keyword(s):

Sign Language ◽

Left Handed ◽

Right Brain ◽

The Right

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Effect of Lateral Tilt Angle on the Volume of the Abdominal Aorta and Inferior Vena Cava in Pregnant and Nonpregnant Women Determined by Magnetic Resonance Imaging

Anesthesiology ◽

10.1097/aln.0000000000000553 ◽

2015 ◽

Vol 122 (2) ◽

pp. 286-293 ◽

Cited By ~ 65

Author(s):

Hideyuki Higuchi ◽

Shunichi Takagi ◽

Kan Zhang ◽

Ikue Furui ◽

Makoto Ozaki

Keyword(s):

Magnetic Resonance ◽

Inferior Vena Cava ◽

Abdominal Aorta ◽

Supine Position ◽

Inferior Vena ◽

Vena Cava ◽

Magnetic Resonance Images ◽

Mean Difference ◽

Lateral Tilt ◽

The Right

Abstract Background: Left-lateral tilt position is used to reduce assumed aortocaval compression by the pregnant uterus. Methods: Magnetic resonance images of 10 singleton parturients at full term and 10 healthy nonpregnant women were obtained for measurement of the abdominal aorta and inferior vena cava volume between the L1–L2 disk and L3–L4 disk levels in both the supine and left-lateral tilt positions (15°, 30°, and 45°) maintained by insertion of a 1.5-m-long polyethylene foam placed under the right side of the parturient’s body. Results: Aortic volume did not differ significantly between parturients and nonpregnant women in the supine position (12.7 ± 2.0 vs.12.6 ± 2.1 ml, mean ± SD; mean difference, –0.1; 95% confidence interval [CI], −2.0 to 1.9; P = 0.95). Inferior vena cava volume in the supine position was significantly lower in parturients than in nonpregnant women (3.2 ± 3.4 vs.17.5 ± 7.8 ml; mean difference, 14.3; 95% CI, 8.3–20.2; P < 0.001). Aortic volume in parturients did not differ among left-lateral tilt positions. Inferior vena cava volume in the parturients was not increased at 15° (3.0 ± 2.1 ml; mean difference, −0.2; 95% CI, −1.5 to 1.2; P > 0.99), but was significantly increased at 30° (11.5 ± 8.6 ml; mean difference, 8.3; 95% CI, 2.3–14.2; P = 0.009) and 45° (10.9 ± 6.8 ml; mean difference, 7.7; 95% CI, 2.2–13.1; P = 0.015). Conclusions: In parturients, the aorta was not compressed, and a 15° left-lateral tilt position did not effectively reduce inferior vena cava compression.

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Artistic Production Following Brain Damage: A Study of Three Artists

Leonardo ◽

10.1162/leon_a_00240 ◽

2011 ◽

Vol 44 (5) ◽

pp. 405-410 ◽

Cited By ~ 13

Author(s):

Anjan Chatterjee ◽

Bianca Bromberger ◽

William B. Smith ◽

Rebecca Sternschein ◽

Page Widick

Keyword(s):

Brain Damage ◽

Right Hemisphere ◽

Neural Basis ◽

Left Brain ◽

Right Hemisphere Damage ◽

Right Brain ◽

Art Production ◽

The Right ◽

Left Brain Damage ◽

Insight Into

We know little about the neurologic bases of art production. The idea that the right brain hemisphere is the “artistic brain” is widely held, despite the lack of evidence for this claim. Artists with brain damage can offer insight into these laterality questions. The authors used an instrument called the Assessment of Art Attributes to examine the work of two individuals with left-brain damage and one with right-hemisphere damage. In each case, their art became more abstract and distorted and less realistic. They also painted with looser strokes, less depth and more vibrant colors. No unique pattern was observed following right-brain damage. However, art produced after left-brain damage also became more symbolic. These results show that the neural basis of art production is distributed across both hemispheres in the human brain.

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Atypical Localization of Enchondroma in the Calcaneus

Journal of the American Podiatric Medical Association ◽

10.7547/0003-0538-105.3.260 ◽

2015 ◽

Vol 105 (3) ◽

pp. 260-263 ◽

Cited By ~ 1

Author(s):

Erkam Komurcu ◽

Burak Kaymaz ◽

Umut Hatay Golge ◽

Ferdi Goksel ◽

Mustafa Resorlu ◽

...

Keyword(s):

Magnetic Resonance ◽

Physical Examination ◽

Clinical Manifestations ◽

Magnetic Resonance Images ◽

Heel Pain ◽

Definitive Treatment ◽

Tomographic Images ◽

Computed Tomographic ◽

The Right ◽

Atypical Localization

A 53-year-old man presented to the orthopedic outpatient clinic with pain and swelling in the right heel without any trauma. On physical examination and radiologic assessment, a lesion with calcification and peripheral sclerosis was detected in the medullary cavity of the calcaneus, and computed tomographic images revealed cortical thinning adjacent to the lesion. Magnetic resonance images showed a 23 × 19-mm lesion. Tru-Cut biopsy, performed to clarify the diagnosis, revealed an enchondroma. As a definitive treatment, curettage of the lesion and grafting of the cavity was performed. Although enchondromas are common pathologic abnormalities of the skeleton and are usually asymptomatic, atypical localization, such as the calcaneus, and atypical clinical manifestations, such as heel pain, should also be kept in mind.

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Christian Faith View On Mid-Brain Activation System And Its Impact On The Spirituality Of Children Aged 6 To 12 Years Old In Surabaya

Journal Kerugma ◽

10.33856/kerugma.v4i2.221 ◽

2021 ◽

Vol 4 (2) ◽

pp. 1-19

Author(s):

Connie Laurina

Keyword(s):

Field Research ◽

Vital Role ◽

Research Approach ◽

Literature Study ◽

Left Brain ◽

Right Brain ◽

God's Word ◽

Activation System ◽

The Right ◽

The Brain

God created humans as the most special creation compared to His other creations. Human intelligence is caused by one organ which, although small in size, has a very vital role, namely the brain. Advances in knowledge and technology have encouraged scientists to try solving the mysteries of the brain. Many studies have focused on the right brain and left brain, or to balance the right brain and left brain. But in recent years, there has been a training/self-development institute who stated that they had found a way to balance the right and left brain, namely by activating the midbrain. This midbrain activation method is aimed at children aged 5-15 years because it is considered that children at this age are more easily activated in a very short time through a computer.The method used in writing this work is a Literature Study that contains various information on matters related to the topic of discussion. In addition to using literature, writing will be complemented by field research, using a Check List to interview respondents. The research approach used are qualitative and quantitative approach. A The qualitative approach obtains data regarding respondent's experiences. This writing has the aim of finding ( knowing ) whether the Midbrain Activation system is in accordance with God's Word or against God's Word; to open the horizons of parents, congregations and even readers of this paper, especially those with children, so that they can be more careful in choosing training for their children.

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Correlation between voxel based morphometry and manual volumetry in magnetic resonance images of the human brain

Anais da Academia Brasileira de Ciências ◽

10.1590/s0001-37652008000100010 ◽

2008 ◽

Vol 80 (1) ◽

pp. 149-156 ◽

Cited By ~ 16

Author(s):

Ricardo R. Uchida ◽

Cristina M. Del-Ben ◽

David Araújo ◽

Geraldo Busatto-Filho ◽

Fábio L.S. Duran ◽

...

Keyword(s):

Magnetic Resonance ◽

Gray Matter ◽

Brain Structures ◽

Magnetic Resonance Images ◽

Healthy Controls ◽

Gaussian Filter ◽

Voxel Based Morphometry ◽

The Right ◽

Correlation Procedure ◽

Structural Volume

This is a comparative study between manual volumetry (MV) and voxel based morphometry (VBM) as methods of evaluating the volume of brain structures in magnetic resonance images. The volumes of the hippocampus and the amygdala of 16 panic disorder patients and 16 healthy controls measured through MV were correlated with the volumes of gray matter estimated by optimized modulated VBM. The chosen structures are composed almost exclusively of gray matter. Using a 4 mm Gaussian filter, statistically significant clusters were found bilaterally in the hippocampus and in the right amygdala in the statistical parametric map correlating with the respective manual volume. With the conventional 12 mm filter,a significant correlation was found only for the right hippocampus. Therefore,narrowfilters increase the sensitivity of the correlation procedure, especially when small brain structures are analyzed. The two techniques seem to consistently measure structural volume.

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