Caltech News: Reading Minds with Ultrasound: A Less-Invasive Technique to Decode the Brain's Intentions

Science Magazine: Ultrasound reads monkey brains, opening new way to control machines with thought

Congratulations Matiar Jafari for being accepted in the Neurosurgery Residency program at UCLA

Congratulations to Charles Guan for being awarded a AI4Science Fellowship sponsored by Amazon.

Congratulations to Jorge Gamez for being awarded a Swartz Fellowship in Theoretical Neurobiology.

New Publications

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. 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:

Bashford L, Rosenthal I, Kellis S, Pejsa K, Lee B, Liu CY, Andersen RA (2021) "The neurophysiological representation of imagined somatosensory percepts in human cortex." Journal of Neuroscience. 41 (10) 2177-2185; DOI: 10.1523/JNEUROSCI.2460-20.2021. PMID: 33483431

Aflalo, T., C. Zhang, E. R. Rosario, N. Pouratian, G. A. Orban and R. A. Andersen (2020). "A shared neural substrate for action verbs and observed actions in human posterior parietal cortex." Sci Adv 6(43). PMID: 33097536 PMCID: PMC7608826.


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).