<unk> refers to the ability to identify the<unk> s in view based on visual input. One important signature of<unk> is<unk>  invariance", or the ability to identify<unk> s across changes in the detailed context in which<unk> s are viewed, including changes in illumination,<unk>  pose, and background context.
Visual object recognition 
Visual temporal integration
Natural scene perception
Visual perception
Visuospatial function
Visual processing
Memory span
Multisensory integration