Behavioral and Brain Sciences

Open Peer Commentary
Pessoa et al.: Perceptual completion

Surface representation by population coding

Hidehiko Komatsu a1
a1 Laboratory of Neural Control, National Institute for Physiological Sciences, Myodaiji, Okazaki-shi, Aichi, 444-8585, Japan [email protected]


Although there is empirical evidence of neural filling-in, this does not necessarily entail “isomorphic” theory. Most cortical neurons do not respond to a uniform surface and are instead sensitive to surface size and quality. I propose that a population of such neurons encodes the presence of a surface. This scheme is different from either the “cognitive” or “isomorphic” theories.