Related Experiment Video
Updated: Feb 1, 2026

Frame-by-Frame Video Analysis of Idiosyncratic Reach-to-Grasp Movements in Humans
Published on: January 15, 2018
Condition-Dependent Neural Dimensions Progressively Shift during Reach to Grasp
Adam G Rouse1, Marc H Schieber2
1Department of Neuroscience, University of Rochester, Rochester, NY 14642, USA; Del Monte Institute for Neuroscience, University of Rochester, Rochester, NY 14642, USA.
Abstract:
Neural population space analysis was performed to assess the dimensionality and dynamics of the neural population in the primary motor cortex (M1) during a reach-grasp-manipulation task in which both the reach location and the object being grasped were varied. We partitioned neural activity into three components: (1) general task-related activity independent of location and object, (2) location- and/or object-related activity, and (3) noise. Neural modulation related to location and/or object was only one-third the size of either general task modulation or noise. The neural dimensions of location and/or object-related activity overlapped with both the general task and noise dimensions. Rather than large amplitude modulation in a fixed set of dimensions, the active dimensions of location and/or object modulation shifted progressively over the time course of a trial.
Related Concept Videos
Support Reactions in Three Dimensions
Ball and Socket Joint is one of the supports allowing free rotation about any axis. This freedom of rotation is...
Relative Velocity in One Dimension
Relative Velocity in Two Dimensions
Dimensions of Health and Illness
Equations of Equilibrium in Three Dimensions
According to the vector equations of equilibrium, the vector sum of all the external forces acting on a body must...
Structural Properties and Dimensions of Lumber
The strength characteristics of...

