Abstract
The posterior parietal cortex (PPC) of humans and non-human primates plays a key role in the sensory and motor transformations required to guide motor actions to objects of interest in the environment. Despite decades of research, the anatomical and functional organization of this region is still a matter of contention. It is generally accepted that specialized parietal subregions and their functional counterparts in the frontal cortex participate in distinct segregated networks related to eye, arm and hand movements. However, experimental evidence obtained primarily from single neuron recording studies in non-human primates has demonstrated a rich mixing of signals processed by parietal neurons, calling into question ideas for a strict functional specialization. Here, we present a brief account of this line of research together with the basic trends in the anatomical connectivity patterns of the parietal subregions. We review, the evidence related to the functional communication between subregions of the PPC and describe progress towards using parietal neuron activity in neuroprosthetic applications. Recent literature suggests a role for the PPC not as a constellation of specialized functional subdomains, but as a dynamic network of sensorimotor loci that combine multiple signals and work in concert to guide motor behavior.
| Original language | English |
|---|---|
| Article number | 15 |
| Number of pages | 8 |
| Journal | Frontiers in Neural Circuits |
| Volume | 13 |
| DOIs | |
| Publication status | Published - 11 Mar 2019 |
Keywords
- Eye movements
- Grasping
- Movement planning
- Posterior parietal cortex
- PPC
- Reaching
Cite this
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Mixed spatial and movement representations in the primate posterior parietal cortex. / Hadjidimitrakis, Kostas; Bakola, Sophia; Wong, Yan T.; Hagan, Maureen A.
In: Frontiers in Neural Circuits, Vol. 13, 15, 11.03.2019.Research output: Contribution to journal › Review Article › Research › peer-review
TY - JOUR
T1 - Mixed spatial and movement representations in the primate posterior parietal cortex
AU - Hadjidimitrakis, Kostas
AU - Bakola, Sophia
AU - Wong, Yan T.
AU - Hagan, Maureen A.
PY - 2019/3/11
Y1 - 2019/3/11
N2 - The posterior parietal cortex (PPC) of humans and non-human primates plays a key role in the sensory and motor transformations required to guide motor actions to objects of interest in the environment. Despite decades of research, the anatomical and functional organization of this region is still a matter of contention. It is generally accepted that specialized parietal subregions and their functional counterparts in the frontal cortex participate in distinct segregated networks related to eye, arm and hand movements. However, experimental evidence obtained primarily from single neuron recording studies in non-human primates has demonstrated a rich mixing of signals processed by parietal neurons, calling into question ideas for a strict functional specialization. Here, we present a brief account of this line of research together with the basic trends in the anatomical connectivity patterns of the parietal subregions. We review, the evidence related to the functional communication between subregions of the PPC and describe progress towards using parietal neuron activity in neuroprosthetic applications. Recent literature suggests a role for the PPC not as a constellation of specialized functional subdomains, but as a dynamic network of sensorimotor loci that combine multiple signals and work in concert to guide motor behavior.
AB - The posterior parietal cortex (PPC) of humans and non-human primates plays a key role in the sensory and motor transformations required to guide motor actions to objects of interest in the environment. Despite decades of research, the anatomical and functional organization of this region is still a matter of contention. It is generally accepted that specialized parietal subregions and their functional counterparts in the frontal cortex participate in distinct segregated networks related to eye, arm and hand movements. However, experimental evidence obtained primarily from single neuron recording studies in non-human primates has demonstrated a rich mixing of signals processed by parietal neurons, calling into question ideas for a strict functional specialization. Here, we present a brief account of this line of research together with the basic trends in the anatomical connectivity patterns of the parietal subregions. We review, the evidence related to the functional communication between subregions of the PPC and describe progress towards using parietal neuron activity in neuroprosthetic applications. Recent literature suggests a role for the PPC not as a constellation of specialized functional subdomains, but as a dynamic network of sensorimotor loci that combine multiple signals and work in concert to guide motor behavior.
KW - Eye movements
KW - Grasping
KW - Movement planning
KW - Posterior parietal cortex
KW - PPC
KW - Reaching
UR - http://www.scopus.com/inward/record.url?scp=85063928951&partnerID=8YFLogxK
U2 - 10.3389/fncir.2019.00015
DO - 10.3389/fncir.2019.00015
M3 - Review Article
C2 - 30914925
AN - SCOPUS:85063928951
VL - 13
JO - Frontiers in Neural Circuits
JF - Frontiers in Neural Circuits
SN - 1662-5110
M1 - 15
ER -