M
Mark M. Churchland
Researcher at Columbia University
Publications - 80
Citations - 9864
Mark M. Churchland is an academic researcher from Columbia University. The author has contributed to research in topics: Motor cortex & Population. The author has an hindex of 36, co-authored 73 publications receiving 7910 citations. Previous affiliations of Mark M. Churchland include University of California, San Francisco & Northwestern University.
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Journal ArticleDOI
Neural population dynamics during reaching
Mark M. Churchland,John P. Cunningham,John P. Cunningham,Matthew T. Kaufman,Justin D Foster,Paul Nuyujukian,Stephen I. Ryu,Stephen I. Ryu,Krishna V. Shenoy +8 more
TL;DR: It is found that motor cortex responses during reaching contain a brief but strong oscillatory component, something quite unexpected for a non-periodic behaviour.
Journal ArticleDOI
Stimulus onset quenches neural variability: a widespread cortical phenomenon
Mark M. Churchland,Byron M. Yu,Byron M. Yu,John P. Cunningham,Leo P. Sugrue,Leo P. Sugrue,Marlene R. Cohen,Marlene R. Cohen,Greg S. Corrado,Greg S. Corrado,William T. Newsome,William T. Newsome,Andrew M. Clark,Paymon Hosseini,Benjamin B. Scott,David C. Bradley,Matthew A. Smith,Adam Kohn,Adam Kohn,J. Anthony Movshon,Katherine M. Armstrong,Tirin Moore,Steve W. C. Chang,Lawrence H. Snyder,Stephen G. Lisberger,Nicholas J. Priebe,Ian M. Finn,David Ferster,Stephen I. Ryu,Gopal Santhanam,Maneesh Sahani,Krishna V. Shenoy +31 more
TL;DR: In this article, the authors measured neural variability in 13 extracellularly recorded datasets and one intra-cellularly recorded dataset from seven areas spanning the four cortical lobes in monkeys and cats and found that stimulus onset caused a decline in neural variability.
Journal ArticleDOI
Cortical control of arm movements: a dynamical systems perspective.
TL;DR: How a dynamical systems perspective may help to understand why neural activity evolves the way it does, how neural activity relates to movement parameters, and how a unified conceptual framework may result are reviewed.
Journal ArticleDOI
Cortical activity in the null space: permitting preparation without movement
TL;DR: It is found that during preparation, while the monkey holds still, changes in motor cortical activity cancel out at the level of these population readouts, and motor cortex can thereby prepare the movement without prematurely causing it.
Journal ArticleDOI
A high-performance neural prosthesis enabled by control algorithm design
Vikash Gilja,Paul Nuyujukian,Cynthia A. Chestek,John P. Cunningham,John P. Cunningham,Byron M. Yu,Joline M. Fan,Mark M. Churchland,Matthew T. Kaufman,Jonathan C. Kao,Stephen I. Ryu,Stephen I. Ryu,Krishna V. Shenoy +12 more
TL;DR: A new control algorithm is presented, the recalibrated feedback intention–trained Kalman filter (ReFIT-KF) that incorporates assumptions about the nature of closed-loop neural prosthetic control and demonstrates repeatable high performance for years after implantation in two monkeys, thereby increasing the clinical viability of neural prostheses.