Feedback projections are an integral part of the mammalian visual system. Although it is
tempting to relegate them to a subsidiary role in visual processing, because their supposed …

This is a survey of psychophysical studies of motion perception carried out mainly in the last
10 years. It covers a wide range of topics, including the detection and interactions of local …

Neurons in the dorsal visual pathway of the mammalian brain are selective for motion
stimuli, with the complexity of stimulus representations increasing along the hierarchy. This …

Spatial attention shifts receptive fields in monkey extrastriate visual cortex toward the focus
of attention (S. Ben Hamed, JR Duhamel, F. Bremmer, & W. Graf, 2002; CE Connor, JL …

Neurons in sensory systems often pool inputs over arrays of presynaptic cells, giving rise to
functional subunits inside a neuron's receptive field. The organization of these subunits …

We compared aspects of shape representation in extrastriate visual areas V2 and V4, which
are both implicated in shape processing and belong to different hierarchical levels. We …

Random dot motion (RDM) displays have emerged as one of the standard stimulus types
employed in psychophysical and physiological studies of motion processing. RDMs are …

Neurons in sensory cortex are tuned to diverse features in natural scenes. But what
determines which features neurons become selective to? Here we explore the idea that …

The visual system is split into two processing streams: a ventral stream that receives color
and form information and a dorsal stream that receives motion information. Each stream …

Nervous systems adapt to the prevailing sensory environment, and the consequences of this
adaptation can be observed in the responses of single neurons and in perception. Given the …