NDLI: Preparatory Activity in PMd Neurons to Bypass a Virtual Obstacle in the Reaching Path

Content Provider	IEEE Xplore Digital Library
Author	Tao Kang Jiping He
Copyright Year	2006
Description	Author affiliation: Harrington Dept. of Bioeng., Arizona State Univ., Tempe, AZ (Tao Kang; Jiping He)
Abstract	We recorded neural activities in dorsal premotor areas (PMd) when monkey was preparing to perform arm reaching movements in motor-set period before his actual execution. He was required to select one of four possible movements (reaching a target on the top-left or top-right corner of a virtual cube, moving straightly or making a detour) in accordance with two sets of instruction cues. Among the neurons recorded, we analyzed 118 neurons which showed set activities during movement preparation. More specifically, 46 neurons were modulated with respect to the obstacle-related conditions;42 neurons, with respect to target location and 15 were tuning to both. In trials in which the virtual obstacle appeared, successful trials were also compared to unsuccessful (hit-obstacle) trials, in which the monkey moved straight to the target instead of bypassing the virtual obstacle. The motor-set activity of a specific group of neurons was significantly different in set activities between successful and unsuccessful trials. Their activity was strongly modulated by the spatial position of the virtual obstacle, indicating that those cells likely participated in the planning of the hand path (straight or curved in counterclockwise direction) based on visual information about the virtual obstacle. At the same time, neurons in which the spike activity modulation with respect to the virtual obstacle position was relatively weak, did not show significant differentiation of the motor-set, preparatory activity between successful and unsuccessful trial types
Sponsorship	IEEE EMB
Starting Page	5487
Ending Page	5490
File Size	350133
Page Count	4
File Format	PDF
ISBN	1424400325
ISSN	1557170X
DOI	10.1109/IEMBS.2006.260624
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-08-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Neurons Virtual reality Animals Wrist Wheels Cities and towns USA Councils Helium Surgery Glass
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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Preparatory Activity in PMd Neurons to Bypass a Virtual Obstacle in the Reaching Path