yuqiliu1179.bsky.social
@yuqiliu1179.bsky.social
These findings provide novel evidence for long-range motor reorganization and visual recruitment subsequent to S1 damage in human subjects, adding knowledge regarding the differential roles across motor regions in sensorimotor integration.
March 5, 2025 at 5:13 AM
Finally, both LS and RF showed greater activity in middle occipital gyrus relative to controls, suggesting a potential reliance on visual imagery in the face of degraded sensory feedback.
March 5, 2025 at 5:13 AM
In contrast, RF, who had a small island of spared ipsilesional (left) S1 that was active during stimulation of the hand, showed greater activation in contralesional (right) S1 for movement versus rest, demonstrating cross-hemispheric reorganization.
March 5, 2025 at 5:13 AM
These findings provide evidence for a potential reweighting of the motor network after S1 damage, such that the noisy sensory information leads to inhibition of sensory prediction mechanisms in the cerebellum.
March 5, 2025 at 5:13 AM
In one individual (LS) with near complete damage to the S1 hand area, moving the contralesional right hand elicited stronger activation in right putamen relative to age-matched controls, and surprisingly, *deactivation* in right cerebellum (Lobule VI).
March 5, 2025 at 5:13 AM
As expected, both individuals showed elevated tactile detection thresholds and distorted tactile localization on the contralesional right hand, and accordingly relied heavily on vision when moving the hand. Otherwise they had preserved motor abilities.
March 5, 2025 at 5:13 AM