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Cortical activation during a right-hand clenching task. BOLD activation is centered at the cortical surface of the left hand-knob area and extends to the postcentral gyrus over the central sulcus. VASO can detect separate activations in the superficial and deep cortical layers of the precentral gyrus and the postcentral gyrus. BOLD, blood-oxygen level-dependent; VASO, vascular space occupancy.
