Hemineglect evaluation using a spatial visuo-auditory task

Detection of Auditory Signals in Quiet and Noisy Backgrounds while Performing a Visuo-spatial Task

CONTEXT The ability to detect important auditory signals while performing visual tasks may be further compounded by background chatter. Thus, it is important to know how task performance may interact with background chatter to hinder signal detection. AIM To examine any interactive effects of speech spectrum noise and task performance on the ability to detect signals. SETTINGS AND DESIGN Th...

Spatial hemineglect in humans.

The term `spatial hemineglect' refers collectively to disorders of spatial cognition, which concern specific sectors of space with reference to a given coordinate system. Patients with cerebral lesions involving the posterior-inferior parietal and the premotor cortex, most often in the right hemisphere, sometimes fail to explore the extra-personal and personal sectors of space contralateral to ...

Visuo-spatial Working Memory

A Model of Spatial Representations in Parietal Cortex Explains Hemineglect

La Jolla, CA 92037 [email protected] We have recently developed a theory of spatial representations in which the position of an object is not encoded in a particular frame of reference but, instead, involves neurons computing basis functions of their sensory inputs. This type of representation is able to perform nonlinear sensorimotor transformations and is consistent with the response properties ...

Loss of imagery phenomenology with intact visuo-spatial task performance: a case of 'blind imagination'.

The capacity for imagery, enabling us to visualise absent items and events, is a ubiquitous feature of our experience. This paper describes the case of a patient, MX, who abruptly lost the ability to generate visual images. He rated himself as experiencing almost no imagery on standard questionnaires, yet performed normally on standard tests of perception, visual imagery and visual memory. Thes...