Donoghue Lab, Neuroscience Department, Brown University
Research
Motor Plans and Representations

My research currently focuses on differentiating the kinematic characteristics and neural control of familiar, trained movements vs. unfamiliar, novel movements. Some sort of pre-learned information defines a familiar movement as such; how does the activity within and across different brain regions reflect this internal plan? I hypothesize that parietal area 5d carries multimodal information about plans for movement sequences, and shares this internal plan information with primary motor cortex.

--Benjamin Philip

[Image]

Figure: Target and hand cursor paths during one sample trial with an unfamiliar movement sequence. We rewarded the primate participant for keeping its hand cursor in contact with a continuously moving target. Thick line represents monkey hand cursor path; thin line represents center of target path. Black square indicates target starting position and target size; black circle indicates hand cursor starting position. Thick grey square indicates area in which target was occluded (second segment only). Color denotes speed. A: Unfamiliar (novel) sequence. B: Familiar (trained) sequence.