A. David Milner

Stimulus sampling and the use of distal visual cues in rats with lesions of the superior colliculus

PERCEPTION AND ACTION IN ‘VISUAL FORM AGNOSIA’

A single case study of a patient with 'visual form agnosia' is presented. A severe visual recognition deficit was accompanied by impairments in discriminating shape, reflectance...

Separate visual pathways for perception and action

Accumulating neuropsychological, electrophysiological and behavioural evidence suggests that the neural substrates of visual perception may be quite distinct from those underlyi...

Visuo-Spatial Performance Following Posterior Parietal and Lateral Frontal Lesions in Stumptail Macaques

Three groups of four monkeys were trained to negotiate a small hand ("stylus") maze, and to use a "pointer" to guide response in a two-choice position discrimination task. One g...

A neurological dissociation between perceiving objects and grasping them

Studies of the visual capacity of neurological patients have provided evidence for a dissociation between the perceptual report of a visual stimulus and the ability to direct sp...

Visual sampling after lesions of the superior colliculus in rats.

In two separate experiments, rats with bilateral lesions of the superior colliculus showed significantly poorer relearning of a horizontal/vertical stripe discrimination than co...