Function of the Parietal Associative Area 7 as Revealed From Cellular Discharges in Alert Monkeys

Hyvärinen, Juhani; Poranen, Antti

doi:10.1093/brain/97.1.673

Cited by 574 publications

(144 citation statements)

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“…Conversely, ever since the pioneering work of Hyvirinen and Poranen [16] and Mountcastle and colleagues [17], we have known that visually sensitive cells in the posterior parietal cortex, which is the major recipient zone for dorsal stream projections in the monkey, are modulated by the concurrent motor behaviour of the animal. Thus, the activity of some visually driven cells in this region has been shown to be linked to saccadic eye movements; the activity of others to whether or not the animal is fixating a stimulus; and the activity of other cells to whether or not the animal is engaged in visual pursuit or is making goal-directed reaching movements.…”

Section: Discussionmentioning

confidence: 99%

Separate neural pathways for the visual analysis of object shape in perception and prehension

et al. 1994

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Section: Discussionmentioning

confidence: 99%

Separate neural pathways for the visual analysis of object shape in perception and prehension

et al. 1994

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“…Indeed, peripersonal space neurons have been described in area 7b of the inferior parietal cortex (Hyvärinen and Poranen, 1974;Hyvärinen and Shelepin, 1979), at several foci in the IPS (Duhamel et al, 1998;Avillac et al, 2005;Grefkes and Fink, 2005), in the ventral premotor cortex (Rizzolatti et al, 1981a,b;Graziano et al, 1997), and subcortically in the putamen (Graziano and Gross, 1993). These neurons are multisensory because they integrate visual, tactile, proprioceptive, and even auditory information from a body part and its surrounding space (Rizzolatti et al, 1981a,b;Graziano et al, 1997Graziano et al, , 1999Avillac et al, 2005Avillac et al, , 2007.…”

Section: A Spatial Representation For Hand-object Interactionsmentioning

confidence: 99%

“…It is therefore of fundamental importance to know where objects are located with respect to the body. Evolution has provided the brain with an efficient mechanism to represent visual information with respect to the limbs, using the limb itself as a reference (Hyvärinen and Poranen, 1974;Rizzolatti et al, 1981a,b;Graziano et al, 1994). Electrophysiological experiments in macaques have described neuronal populations that encode the location of visual stimuli in body-part-centered reference frames in a set of anatomically connected areas in the inferior parietal lobe, intraparietal sulcus, premotor cortex, and putamen (Colby et al, 1993;Graziano and Gross, 1993).…”

Section: Introductionmentioning

confidence: 99%

fMRI Adaptation Reveals a Cortical Mechanism for the Coding of Space Near the Hand

Brozzoli

Gentile²,

Petkova³

et al. 2011

Journal of Neuroscience

154

129

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Behavioral studies in humans and electrophysiological recordings in nonhuman primates have suggested the existence of a specific representation of the space immediately surrounding the body. In macaques, neurons that have visual receptive fields limited to a region of space close around a body part have been found in premotor and parietal areas. These cells are hypothesized to encode the location of external objects in coordinate systems that are centered on individual body parts. In the present study, we used an fMRI adaptation paradigm on healthy participants to reveal areas in the anterior part of the intraparietal sulcus, the inferior parietal lobe (supramarginal gyrus), and the dorsal and ventral portions of the premotor cortex that exhibit selective BOLD adaptation to an object moving near the right hand. Crucially, these areas did not manifest adaptation if the stimulus was presented in far space (100 cm) or when the hand was retracted from the object. This hand-centered selectivity could not be detected when a traditional fMRI analysis approach was used. These findings are important as they provide the most conclusive neuroimaging evidence to date for a representation of near-personal space in the human brain. They also demonstrate a selective mechanism implemented by human perihand neurons in the premotor and posterior parietal areas and add to earlier findings from humans and nonhuman primates.

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“…Among these, banks and funds of the IPS including medial-(MIP), ventral-(VIP), and anterior-intraparietal (AIP) areas, and the anterior sector of area 7b located around the lateralmost part of the IPS are accredited as one of the sites of visuo-somatosensory integration. A number of neurones with both somatosensory and visual receptive fields were identified (for review see Hyvärinen & Poranen, 1974). However, evidence concerning the integration of information in regard to forearm joint displacements and spatial motion directions has been oddly lacking in earlier reports as follows.…”

Section: Bimodal Joint-neurons In the Intraparietal Corticesmentioning

confidence: 99%

Intraparietal Bimodal Neurones Delineating Extrinsic Space Through Intrinsic Actions

Tanaka

Obayashi

Yokochi

et al. 2004

PSYCHOLOGIA -An International Journal of Psychological Sciences

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We can mentally calibrate the directions of our bodily movements into visual coordinate systems to achieve purposeful actions in space. Alternatively, we can apprehend characteristics of the peri-personal space through actions performed by our own body parts. Such interactions between representations of our body motions and extrinsic space should occur in the intraparietal cortices, where the hierarchically processed somatosensory information adjoins the information on spatial vision processed along the dorsal stream. In this brain area of monkeys, we analyzed the response properties of "bimodal joint neurones", which responded simultaneously to forearm joint displacements and visual stimuli moving in one direction in space. For the majority of these neurones, the directions of hand movements in space as a result of adequate joint displacements were congruent with the preferred directions of the moving visual stimuli. When the arm position was rotated, the preferred direction of the joint displacement became inverted so as to match the induced hand movement in space with the preferred visual stimulus direction. On the other hand, in some neurones the visual preferred direction became inverted when the joint was rotated, becoming to match the preferred direction of joint displacement. Hence, intraparietal neurones appear not only to represent mental recalibration of intrinsic movements into extrinsic coordinates, but also render delineation of extrinsic space through intrinsic actions.

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Function of the Parietal Associative Area 7 as Revealed From Cellular Discharges in Alert Monkeys

Cited by 574 publications

References 0 publications

Separate neural pathways for the visual analysis of object shape in perception and prehension

Separate neural pathways for the visual analysis of object shape in perception and prehension

fMRI Adaptation Reveals a Cortical Mechanism for the Coding of Space Near the Hand

Intraparietal Bimodal Neurones Delineating Extrinsic Space Through Intrinsic Actions

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