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Intention-related activity in the posterior parietal cortex: a review

Snyder, L. H. and Batista, A. P. and Andersen, R. A. (2000) Intention-related activity in the posterior parietal cortex: a review. Vision Research, 40 (10-12). pp. 1433-1441. ISSN 0042-6989. doi:10.1016/s0042-6989(00)00052-3.

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Over the last few years it is becoming increasingly apparent that an important role of the posterior parietal cortex is to process sensory information for the purpose of planning actions. We review studies showing that a large component of neural activity in area LIP is related to planning saccades and activity in a nearby parietal reach region (PRR) to reaches. This intention related activity dominates the delay period in delayed movement tasks, and also comprises a substantial component of the transient response. These findings, along with additional anatomical and physiological evidence, lends support to the idea that different cortical areas within the PPC represent plans for different actions. We also found strong modulation of activity when movement plans were changed without changes in the locus of attention. This result suggests that PPC, which has been postulated to play a role in shifting attention, may also play a role in changing movement intentions. Sensory related activity was also present in these tasks and may be related to the stimulus or to attention. These experiments show that there are intention and sensory related activities in the PPC consistent with its proposed role in sensory-motor transformations. These studies also show that care must be taken to measure intention-related signals and not assume that all task dependent modulation in the PPC reflects attention.

Item Type:Article
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Andersen, R. A.0000-0002-7947-0472
Additional Information:© 2000 Elsevier Science Ltd. Received 8 May 1999, Revised 4 January 2000, Available online 27 April 2000. We would like to acknowledge Cierina Reyes for editorial assistance and Betty Gillikin for technical assistance. This work was supported by grants from the NIH, Sloan Center for Theoretical Neurobiology at Caltech, and ONR.
Funding AgencyGrant Number
Sloan-Swartz Center for Theoretical NeurobiologyUNSPECIFIED
Office of Naval Research (ONR)UNSPECIFIED
Subject Keywords:Intention-related activity; Posterior parietal cortex; Process sensory information
Issue or Number:10-12
Record Number:CaltechAUTHORS:20200401-134958648
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Official Citation:L.H Snyder, A.P Batista, R.A Andersen, Intention-related activity in the posterior parietal cortex: a review, Vision Research, Volume 40, Issues 10–12, 2000, Pages 1433-1441, ISSN 0042-6989, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102247
Deposited By: Tony Diaz
Deposited On:01 Apr 2020 21:37
Last Modified:16 Nov 2021 18:10

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