Topic: shape perception

Amblyopia is a developmental visual disorder of the cerebral cortex that compromises contrast sensitivity, spatial resolution, and shape perception (Kiorpes \& Movshon, 1996; Holmes \& Clarke, 2006). Based on recent studies (Pons et al., 2019; Najafian et al. 2022), we hypothesize that amblyopia differently affects ON and OFF visual pathways and their sampling of visual space in the cortex. We test this hypothesis with a computational model that simulates visual distortions in humans with amblyopia, reported as drawings of grating patterns (Barrett et al., 2003). The grating distortions are si

The spatial coding of tactile information is functionally essential for touch-based shape perception and motor control. However, the spatiotemporal dynamics of how tactile information is remapped from the somatotopic reference frame in the primary somatosensory cortex to the spatiotopic reference frame remains unclear. This study investigated how hand position in space or posture influences cortical somatosensory processing. Twenty-two healthy subjects received electrical stimulation to the right thumb (D1) or little finger (D5) in three position conditions: palm down on right side of the body