Plasticity of the Dorsal “Spatial” Stream in Visually Deprived Individuals
Figure 3
(a) Red colored regions denote activations obtained in the study of Bedny et al. [37] from the contrast testing which regions show greater BOLD signal in response to auditory motion in the congenitally blind relative to the sighted controls, in high and low motion conditions relative to rest (left panel) and in the high motion condition relative to the low motion condition (right panel) (, corrected). White colored regions are activated in a sighted group of controls when viewing moving relative to stationary dots. The overlap between regions activated during auditory motion perception in the congenitally blind relative to the sighted, and the ones activated during visual motion perception in the sighted are colored in pink. (b) Percent signal change relative to baseline as a function of time (seconds) in response to auditory motion is displayed in left and right MT/MST ROIs (overlaid in red on a normalized template (left is left) and identified by means of a visual motion localizer in sighted participants) for sighted, congenitally blind, and late blind participants. Solid lines represent percent signal change in response to the high motion condition (footsteps) and dashed lines represent percent signal change in response to the low motion condition (tones). Adapted with permission from [37].
