Abstract

Inferotemporal (IT) neurons in monkeys can respond to visual stimuli in a translation- and scaleinvariant manner. In a neural circuit model based on a recently reported form of gain modulation by attention in area V4, the modulated visual responses of model V4 neurons produce object-centered receptive fields further down the visual processing stream, accounting for invariances exhibited by IT neurons. Introduction The responses of inferotemporal (IT) neurons in monkeys are highly selective for certain types of visual images but, to a large degree, are insensitive to the exact location and size of those images 1;2 . These invariances to translation and scale at the neuronal level parallel our ability to recognize objects independently of the location and size of their images on the retina. Although some ideas have been put forward regarding possible mechanisms for generating invariances 3;4 , these have not been confirmed neurophysiologically. Monkeys with lesions in area V4 canno...

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