Cerebral laterality differences in handedness: A mental rotation study with NIRS

Nobuaki Shimoda; Kotaro Takeda; Itsuki Imai; Junichiroh Kaneko; Hiroyuki Kato

doi:10.1016/j.neulet.2007.10.016

Cerebral laterality differences in handedness: A mental rotation study with NIRS

Nobuaki Shimoda
, Kotaro Takeda
, Itsuki Imai
, Junichiroh Kaneko
, Hiroyuki Kato

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

Spatial cognition is right-hemisphere dominant in right-handers, but hemispheric laterality in left-handers is not fully understood. Using near-infrared spectroscopy, we compared cerebral activations in the frontal and parietal lobes during a mental rotation task between seven healthy right-handed and seven healthy left-handed women. Cerebral laterality during the spatial cognition task was evaluated as balance in the extent of activation areas between the two cerebral hemispheres, using the right-hemispheric dominance index (RI). RIs of right-handers showed right-hemispheric dominance (RI > 0) in both frontal (RI = 0.31 ± 0.25) and parietal (RI = 0.28 ± 0.37) lobes, while left-handers showed slight left-hemispheric dominance (RI < 0) in both frontal (RI = -0.13 ± 0.18) and parietal (RI = -0.22 ± 0.22) lobes. The left-handers exhibited significantly larger amplitudes of activation at the channels overlying the left-superior parietal lobule, whereas the right-handers did not show such amplitude differences. These findings suggest a difference in cerebral hemispheric laterality for spatial cognition between left- and right-handers.

Original language	English
Pages (from-to)	43-47
Number of pages	5
Journal	Neuroscience Letters
Volume	430
Issue number	1
DOIs	https://doi.org/10.1016/j.neulet.2007.10.016
Publication status	Published - 03-01-2008
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Neuroscience

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10.1016/j.neulet.2007.10.016

Cite this

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title = "Cerebral laterality differences in handedness: A mental rotation study with NIRS",

abstract = "Spatial cognition is right-hemisphere dominant in right-handers, but hemispheric laterality in left-handers is not fully understood. Using near-infrared spectroscopy, we compared cerebral activations in the frontal and parietal lobes during a mental rotation task between seven healthy right-handed and seven healthy left-handed women. Cerebral laterality during the spatial cognition task was evaluated as balance in the extent of activation areas between the two cerebral hemispheres, using the right-hemispheric dominance index (RI). RIs of right-handers showed right-hemispheric dominance (RI > 0) in both frontal (RI = 0.31 ± 0.25) and parietal (RI = 0.28 ± 0.37) lobes, while left-handers showed slight left-hemispheric dominance (RI < 0) in both frontal (RI = -0.13 ± 0.18) and parietal (RI = -0.22 ± 0.22) lobes. The left-handers exhibited significantly larger amplitudes of activation at the channels overlying the left-superior parietal lobule, whereas the right-handers did not show such amplitude differences. These findings suggest a difference in cerebral hemispheric laterality for spatial cognition between left- and right-handers.",

author = "Nobuaki Shimoda and Kotaro Takeda and Itsuki Imai and Junichiroh Kaneko and Hiroyuki Kato",

note = "Funding Information: We wish to express our deep gratitude to Dr. Daisuke Tsuzuki, Dr. Archana K. Singh and Dr. Ippeita Dan at the National Food Research Institute, Tsukuba, Japan, for their cooperation in the identification of recording sites and useful suggestions concerning the FDR method. This study was supported by CREST, Japan Science and Technology Agency.",

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AU - Shimoda, Nobuaki

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AU - Kaneko, Junichiroh

AU - Kato, Hiroyuki

N1 - Funding Information: We wish to express our deep gratitude to Dr. Daisuke Tsuzuki, Dr. Archana K. Singh and Dr. Ippeita Dan at the National Food Research Institute, Tsukuba, Japan, for their cooperation in the identification of recording sites and useful suggestions concerning the FDR method. This study was supported by CREST, Japan Science and Technology Agency.

PY - 2008/1/3

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N2 - Spatial cognition is right-hemisphere dominant in right-handers, but hemispheric laterality in left-handers is not fully understood. Using near-infrared spectroscopy, we compared cerebral activations in the frontal and parietal lobes during a mental rotation task between seven healthy right-handed and seven healthy left-handed women. Cerebral laterality during the spatial cognition task was evaluated as balance in the extent of activation areas between the two cerebral hemispheres, using the right-hemispheric dominance index (RI). RIs of right-handers showed right-hemispheric dominance (RI > 0) in both frontal (RI = 0.31 ± 0.25) and parietal (RI = 0.28 ± 0.37) lobes, while left-handers showed slight left-hemispheric dominance (RI < 0) in both frontal (RI = -0.13 ± 0.18) and parietal (RI = -0.22 ± 0.22) lobes. The left-handers exhibited significantly larger amplitudes of activation at the channels overlying the left-superior parietal lobule, whereas the right-handers did not show such amplitude differences. These findings suggest a difference in cerebral hemispheric laterality for spatial cognition between left- and right-handers.

AB - Spatial cognition is right-hemisphere dominant in right-handers, but hemispheric laterality in left-handers is not fully understood. Using near-infrared spectroscopy, we compared cerebral activations in the frontal and parietal lobes during a mental rotation task between seven healthy right-handed and seven healthy left-handed women. Cerebral laterality during the spatial cognition task was evaluated as balance in the extent of activation areas between the two cerebral hemispheres, using the right-hemispheric dominance index (RI). RIs of right-handers showed right-hemispheric dominance (RI > 0) in both frontal (RI = 0.31 ± 0.25) and parietal (RI = 0.28 ± 0.37) lobes, while left-handers showed slight left-hemispheric dominance (RI < 0) in both frontal (RI = -0.13 ± 0.18) and parietal (RI = -0.22 ± 0.22) lobes. The left-handers exhibited significantly larger amplitudes of activation at the channels overlying the left-superior parietal lobule, whereas the right-handers did not show such amplitude differences. These findings suggest a difference in cerebral hemispheric laterality for spatial cognition between left- and right-handers.

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Cerebral laterality differences in handedness: A mental rotation study with NIRS

Abstract

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