BioMed Research International / 2019 / Article / Fig 3

Research Article

Handedness Side and Magnetization Transfer Ratio in the Primary Sensorimotor Cortex Central Sulcus

Figure 3

Scheme for possible asymmetric transcallosal inhibition underlying different MT ratio values in SM1 central sulcus between left- and right-handers. In left-handers, the right SM1 central sulcus may receive a lower number of transcallosal inhibitory fibers from the left SM1 (thin horizontal line) as compared to the right SM1 central sulcus in right handers (bold horizontal line). This would result in a lower cortical density of inhibitory fibers in left handers as compared to right-handers, yielding a lower MT ratio (thin vertical line) in the right SM1 central sulcus when compared to right handers (bold vertical line). Hand dominance is represented by the bold slanted line.

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