Announcements

Congratulations to Spencer Kellis for his new position as Neuroscience Team Lead at Blackrock Neurotech.

New Publications

S. K. Wandelt, S. Kellis, D. A. Bjånes, K. Pejsa, B. Lee, C. Liu, R. A. Andersen. "Decoding grasp and speech signals from the cortical grasp circuit in a tetraplegic human" bioRxiv 2021.10.29.466528; doi: https://doi.org/10.1101/2021.10.29.466528

Guan, C., T. Aflalo, C. Y. Zhang, E. R. Rosario, N. Pouratian, R. A. Andersen (2021) "Preserved motor representations after paralysis" bioRxiv 2021.10.07.463105; doi: https://doi.org/10.1101/2021.10.07.463105

Norman, S. L., D. Maresca, V. N. Christopoulos, W. S. Griggs, C. Demene, M. Tanter, M. G. Shapiro and R. A. Andersen (2021). "Single Trial Decoding of Movement Intentions Using Functional Ultrasound Neuroimaging." Neuron 109, 1–13. https://doi.org/10.1016/j.neuron.2021.03.003. PMID: 33756104

Chivukula, S., C. Zhang, T. Aflalo, M. Jafari, K. Pejsa, N. Pouratian and R. A. Andersen (2021). "Neural encoding of felt and imagined touch within human posterior parietal cortex." eLife 2021;10:e61646. DOI: https://doi.org/10.7554/eLife.61646.

Research

Our behaviors are dictated by our intentions, but we have only recently begun to understand how the brain forms intentions to act. The posterior parietal cortex is situated between the sensory and the movement regions of the cerebral cortex and serves as a bridge from sensation to action. We have found that an anatomical map of intentions exists within this area, with one part devoted to planning eye movements and another part to planning arm movements (Andersen and Buneo 2002). The action plans exist in a cognitive form, specifying the goal of the intended movement.  Current studies involve examining decision making, stages in motor planning, coordinate transformations for sensory guided movements and motion perception.  In recent years we have also used the findings from these animal studies to develop brain-machine interfaces using intention signals recorded from the posterior parietal cortex of tetraplegic human participants (Aflalo et al. 2015).

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