scispace - formally typeset
Book ChapterDOI

Two cortical visual systems in Old World and New World primates.

Reads0
Chats0
TLDR
The results of more recent studies of cortical connections in macaques, when compared with those from three different species of New World monkeys and one Old World prosimian primate, suggest the hypothesis that processing streams directed toward posterior parietal and inferior temporal cortex exist in all primates.
Abstract
Publisher Summary This chapter focuses on two cortical visual systems in Old World and New World primates. Visual cortex is divided into multiple subdivisions, or areas, in the brains of advanced mammals such as primates. Each visual area has a distinctive and complex pattern of cortical connections. A valuable insight was made by Ungerleider and Mishkin that connection between areas of visual cortex in macaque monkeys form two major diverging pathways. Both pathways originate at the level of cortex from striate cortex. One pathway relays through a number of areas rostra1 to striate cortex and terminates in cortex of the posterior parietal lobe. The other pathway relays through a number of different areas and terminates in inferior temporal cortex. The results of more recent studies of cortical connections in macaque monkeys, when compared with those from three different species of New World monkeys and one Old World prosimian primate, suggest the hypothesis that processing streams directed toward posterior parietal and inferior temporal cortex exist in all primates.

read more

Citations
More filters
Journal ArticleDOI

'What' and 'where' in the human brain.

TL;DR: Findings from positron emission tomography activation studies have localized these pathways within the human brain, yielding insights into cortical hierarchies, specialization of function, and attentional mechanisms.
Journal ArticleDOI

Ventral intraparietal area of the macaque: anatomic location and visual response properties.

TL;DR: A discrete area in the depths of the intraparietal sulcus containing neurons with response properties similar to those reported for the middle temporal area is described, called VIP, which suggests that it, like other visual areas in the dorsal stream, may be involved in the analysis of visual motion.
Journal ArticleDOI

Intention, action planning, and decision making in parietal-frontal circuits.

TL;DR: This review covers new research on four components of this transformation process: planning, decision making, forward state estimation, and relative-coordinate representations.
Journal ArticleDOI

From movement to thought: anatomic substrates of the cerebellar contribution to cognitive processing.

TL;DR: These proposed rules and the general and specific hypotheses offered are testable using functional neuroimaging techniques and may thus be mutually advantageous in predicting and explaining new concepts of cerebellar function.
Journal ArticleDOI

Does the nervous system use equilibrium-point control to guide single and multiple joint movements?

TL;DR: The hypothesis that the central nervous system generates movement as a shift of the limb's equilibrium posture has been corroborated experimentally in studies involving single- and multijoint motions and can now be investigated in the neurophysiological machinery of the spinal cord.
References
More filters
Journal ArticleDOI

Posterior parietal association cortex of the monkey: command functions for operations within extrapersonal space

TL;DR: A large proportion of area 5 neurons were relatively insensitive to passive joint rotations, as compared with similar neurons of the postcentral gyrus, but were driven to high rates of discharge when the same joint was rotated during an active movement of the animal.
Journal ArticleDOI

Functional properties of neurons in middle temporal visual area of the macaque monkey. I. Selectivity for stimulus direction, speed, and orientation

TL;DR: The presence of both direction and speed selectivity in MT of the macaque suggests that this area is more specialized for the analysis of visual motion than has been previously recognized.
Journal ArticleDOI

Visual properties of neurons in inferotemporal cortex of the Macaque.

TL;DR: There are several lines of evidence suggesting that a possible site for further processing of visual information and perhaps even for storage of such information might, in the monkey, be inferotemporal cortexthe cortex on the inferior convexity of the temporal lobe.
Related Papers (5)