Visual adaptation to reflectance-specific image motion

Human visual cortical responses to specular and matte motion flows

“…However, a potential consequence of this attentional focus is a lack of activation of cortical pathways that are involved in extracting the surface properties from the motion flows. This could perhaps be assessed behaviorally in future studies using an adaptation paradigm (Kam et al, 2012 ) with differing attentional demands.…”

“…Electrophysiological studies found neurons in the superior temporal sulcus and anterior inferior temporal cortex to be responsive to surface material properties (e.g., Nishio et al, 2012 ), whereas neuroimaging studies have identified several loci in low and high level visual areas including V1, V2, V3, V4, posterior inferior temporal cortex, and ventral higher-order visual areas (Peuskens et al, 2004 ; Cant and Goodale, 2007 ; Köteles et al, 2008 ; Cant and Goodale, 2009 , 2011 ; Cavina-Pratesi et al, 2010a , b ; Hiramatsu et al, 2011 ; Okazawa et al, 2012 ; Wada et al, 2014 ) with responses in higher level visual areas correlating with perceived similarities of surface material categories, and responses in early visual areas correlating with concurrent changes in simple image features such as spatial frequency or color (Hiramatsu et al, 2011 ). The first hint that there may be specialized neural mechanisms sensitive to material-specific motion cues came from an experiment by Kam et al ( 2012 ) which found that visual adaptation to a specular rotating object biases subsequently presented objects toward matte appearance.…”