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Cortical networks for visual reaching: physiological and anatomical organization of frontal and parietal lobe arm regions (1996)
| Venue: | Cereb. Cortex |
| Citations: | 131 - 5 self |
BibTeX
@ARTICLE{Johnson96corticalnetworks,
author = {Paul B. Johnson and Stefano Ferraina and Luigi Bianchi and Roberto Caminiti},
title = {Cortical networks for visual reaching: physiological and anatomical organization of frontal and parietal lobe arm regions},
journal = {Cereb. Cortex},
year = {1996},
pages = {102--119}
}
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Abstract
The functional and structural properties of the dorsolateral frontal lobe and posterior parietal proximal arm representations were studied in macaque monkeys. Physiological mapping of primary motor (Ml), dorsal premotor (PMd), and posterior parietal (area 5) cortices was performed in behaving monkeys trained in an instructed-delay reaching task. The parietofrontal corticocortical connectivities of these same areas were subsequently examined anatomically by means of retrograde tracing techniques. Signal-, set-, movement-, and position-related directional neuronal activities were distributed nonuniformly within the task-related areas in both frontal and parietal cortices. Within the frontal lobe, moving caudally from PMd to the Ml, the activity that signals for the visuospatial events leading to target localization decreased, while the activity more directly linked to movement generation increased. Physiological recordings in the superior parietal lobule revealed a
Keyphrases
anatomical organization parietal lobe arm region visual reaching cortical network dorsal premotor parietofrontal corticocortical connectivity movement generation physiological mapping structural property position-related directional neuronal activity posterior parietal parietal cortex task-related area superior parietal lobule physiological recording posterior parietal proximal arm representation dorsolateral frontal lobe primary motor frontal lobe instructed-delay reaching task visuospatial event macaque monkey
