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Cited by 791

The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.

Posterior parietal cortex in rhesus monkey: I. Parcellation of areas based on distinctive limbic and sensory corticocortical connections

Cavada, Carmen, Goldman‐Rakic, Patricia S.·1989·Journal of Comparative Neurology
DOI 10.1002/cne.902870402
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Abstract

Injections of HRP‐WGA in four cytoarchitectonic subdivisions of the posterior parietal cortex in rhesus monkeys allowed us to examine the major limbic and sensory afferent and efferent connections of each area. Area 7a (the caudal part of the posterior parietal lobe) is reciprocally interconnected with multiple visual‐related areas: the superior temporal polysensory area (STP) in the upper bank of the superior temporal sulcus (STS), visual motion areas in the upper bank of STS, the dorsal prelunate gyrus, and portions of V2 and the parieto‐occipital (PO) area. Area 7a is also heavily interconnected with limbic areas: the ventral posterior cingulate cortex, agranular retrosplenial cortex, caudomedial lobule, the parahippocampal gyrus, and the presubiculum. By contrast, the adjacent subdivision, area 7ip (within the posterior bank of the intraparietal sulcus), has few limbic connections but projects to and receives projections from widespread visual areas different than those that are connected with area 7a: the ventral bank and fundus of the STS including part of the STP cortex and the inferotemporal cortex (IT), areas MT (middle temporal) and possibly MTp (MT peripheral) and FST (fundal superior temporal) and portions of V2, V3v, V3d, V3A, V4, PO, and the inferior temporal (IT) convexity cortex. The connections between posterior parietal areas and visual areas located on the medial surface of the occipital and parieto‐occipital cortex, containing peripheral representations of the visual field (V2, V3, PO), represent a major previously unrecognized source of visual inputs to the parietal association cortex. Area 7b (the rostral part of the posterior parietal lobe) was distinctive among parietal areas in its selective association with somatosensory‐related areas: S1, S2, 5, the vestibular cortex, the insular cortex, and the supplementary somatosensory area (SSA). Like 7ip, area 7b had few limbic associations. Area 7m (on the medial posterior parietal cortex) has its own topographically distinct connections with the limbic (the posterior ventral bank of the cingulate sulcus, granular retrosplenial cortex, and presubiculum), visual (V2, PO, and the visual motion cortex in the upper bank of the STS), and somatosensory (SSA, and area 5) cortical areas. Each parietal subdivision is extensively interconnected with areas of the contralateral hemisphere, including both the homotopic cortex and widespread heterotopic areas. Indeed, each area is interconnected with as many areas of the contralateral hemisphere as it is within the ipsilateral one, though less intensively. This pattern of distribution allows for a remarkable degree of interhemispheric integration. These findings provide evidence that each major subdivision of posteriorparietal cortex has a unique set of reciprocal connections with limbic and sen‐sory areas in both hemispheres. For the most part, each parietalsubdivision, rather than being a site of multimodal convergence, receives input from only one sensory modality, though often from different channels of information within that modality. For example, the two streams of visual information tra‐ditionally linked to pattern and motion seem to converge in both areas 7a and 7ip. The areal parcellation of parietal cortex byits afferent and efferent con‐nections provides an anatomical foundation for a parallel processing model of higher cortical functions.

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Metadata

Authors
Cavada, C., & Goldman‐Rakic, P. S.
Venue
Journal of Comparative Neurology
Publisher
Wiley
Published
1989-09-22
Volume
287
Issue
4
Pages
393-421
ISSN
  • 0021-9967 (ISSN-L)
  • 1096-9861
DOI
10.1002/cne.902870402
OpenAlex
W1991415819
Cited by
791
References
10
FWCI
12.14
Type
journal article
Language
en
Open access
closed

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