Multiple visual areas in the cortex of nonhuman primates are organized into two
hierarchically organized and functionally specialized processing pathways, a 'ventral …

Recent brain-imaging and neurophysiological data indicate that attention is neither a
properly of a single brain area, nor of the entire brain. While attentional effects seem …

A number of recent papers and books discuss theoretical efforts toward a scientific
understanding of consciousness. Progress in imaging networks of brain areas active when …

We have used positron emission tomography to study the functional anatomy of motor
sequence learning. Subjects learned sequences of keypresses by trial and error using …

VISUAL scientists have long sought to explain why the world remains stable during
saccades, the ballistic eye-movements that continually displace the retinal image at fast but …

VISUAL–SPATIAL attention is an essential brain function that enables us to select and
preferentially process high priority information in the visual fields1, 2. Several brain areas …

Regional cerebral blood flow was measured with H215O positron emission tomography in
four patients with obsessive–compulsive disorder. Patients were scanned on 12 occasions …

When cognitive neuropsychologists make inferences about the functional architecture of the
normal mind from selective cognitive impairments they generally assume that the effects of …

Positron emission tomography scans were acquired when subjects performed three tasks,
each in a separate block of trials. They decided whether words named pictures of objects …

We have used the technique of PET to chart the areas of human cerebral cortex specifically
responsive to an optical flow stimulus simulating forward motion in depth over a flat …