Leadership

Michael Brainard, Ph.D.

Director

[email protected]

 

Philip Sabes, PhD

Philip Sabes, PhD

Sensorimotor physiology and neuroprosthetics
Physiology
Emeritus

Philip Sabes is a Professor Emeritus at UCSF and a neurotechnology startup founder.

Dr. Sabes received his PhD from MIT in machine learning and human motor control. He did his postdoctoral research in neurophysiology at Caltech and the Salk Institute, before joining the UCSF Department of Physiology in 2000. At UCSF, Dr. Sabes' lab studied neural computations for movement control and developed novel tools for interfacing with the primate brain.

The Sabes Lab studied how sensory and motor experience shapes movement control and the underlying brain circuits. For example, the lab showed that visual and somatosensory feedback are flexibly and adaptively combined within individual computations, enabling more precise limb movement (Sober and Sabes, 2003 & 2005). The lab then showed how this kind of flexible information flow can explain the complex sensorimotor representations seen in the primate cortex (McGuire and Sabes, 2009). They also showed how these representations are continually changing -- incorporating the statistics of recent movements to optimize the next movement (Verstynen and Sabes, 2011; Cheng and Sabes, 2006). The lab demonstrated that non-human primates can learn to use entirely novel, artificial sensory feedback as if it were a natural sensory signal. Specifically, the primates learned to interpret electrical microstimulation as multidimensional feedback about limb position. These results have clear application in delivering artificial sensory feedback via a Brain Machine Interface (Dadarlat, O'Doherty and Sabes, 2015).

The biggest bottleneck for conducting neuroscience in large brains is our limited ability to record and influence activity patterns, especially deep in the brain. To expand this ability, the lab also built new tools for Brain Interfacing. They developed the first centimeter-scale optogenetic interface in primates which allowed them to study stimulation-induced plasticity between brain areas (Yazdan-Shahmorad et al., 2016 & 2018). The lab also develop the most flexible and scalable approach to-date for electrode-based brain interfacing -- a novel "sewing-machine" approach for robotically placing many micron-scale, thin-film devices to individually specified locations even deep in the brain (Hanson, et al., 2019, in collaboration with the Maharbiz lab at UC Berkeley).

Dr. Sabes was asked to help build the founding team of Neuralink, and in 2017 he retired from UCSF in order to work full time on this groundbreaking company. While he was at Neuralink, the company refined the sewing-machine approach started in his lab, demonstrating 1000+ channels of robotically-inserted, micron-scale thin-film electrodes with a fully implanted, wireless interface. Since leaving Neuralink, Philip has focused on brain interfacing for Neuromodulation. In 2020 he co-founded Starfish Neuroscience, which is working on non-invasive Neuromodulation as well as advanced implantable brain interfaces. He is currently working on a new startup, Integral Neurotechnologies, with the goal of treating psychiatric and neurological disorders and advancing human neuroscience.

Publications: 

TMS-induced phase resets depend on TMS intensity and EEG phase.

Erickson B, Kim B, Sabes P, Rich R, Hatcher A, Fernandez-Nuñez G, Mentzelopoulos G, Vitale F, Medaglia J

Rotational dynamics in motor cortex are consistent with a feedback controller.

Kalidindi HT, Cross KP, Lillicrap TP, Omrani M, Falotico E, Sabes PN, Scott SH

An Open Resource for Non-human Primate Optogenetics.

Tremblay S, Acker L, Afraz A, Albaugh DL, Amita H, Andrei AR, Angelucci A, Aschner A, Balan PF, Basso MA, Benvenuti G, Bohlen MO, Caiola MJ, Calcedo R, Cavanaugh J, Chen Y, Chen S, Chernov MM, Clark AM, Dai J, Debes SR, Deisseroth K, Desimone R, Dragoi V, Egger SW, Eldridge MAG, El-Nahal HG, Fabbrini F, Federer F, Fetsch CR, Fortuna MG, Friedman RM, Fujii N, Gail A, Galvan A, Ghosh S, Gieselmann MA, Gulli RA, Hikosaka O, Hosseini EA, Hu X, Hüer J, Inoue KI, Janz R, Jazayeri M, Jiang R, Ju N, Kar K, Klein C, Kohn A, Komatsu M, Maeda K, Martinez-Trujillo JC, Matsumoto M, Maunsell JHR, Mendoza-Halliday D, Monosov IE, Muers RS, Nurminen L, Ortiz-Rios M, O'Shea DJ, Palfi S, Petkov CI, Pojoga S, Rajalingham R, Ramakrishnan C, Remington ED, Revsine C, Roe AW, Sabes PN, Saunders RC, Scherberger H, Schmid MC, Schultz W, Seidemann E, Senova YS, Shadlen MN, Sheinberg DL, Siu C, Smith Y, Solomon SS, Sommer MA, Spudich JL, Stauffer WR, Takada M, Tang S, Thiele A, Treue S, Vanduffel W, Vogels R, Whitmire MP, Wichmann T, Wurtz RH, Xu H, Yazdan-Shahmorad A, Shenoy KV, DiCarlo JJ, Platt ML

Cortical Stimulation Induces Network-Wide Coherence Change In Non-Human Primate Somatosensory Cortex.

Bloch JA, Khateeb K, Silversmith DB, O'Doherty JE, Sabes PN, Yazdan-Shahmorad A

The “sewing machine” for minimally invasive neural recording

Timothy L. Hanson, Camilo A. Diaz-Botia, Viktor Kharazia, Michel M Maharbiz, Philip N. Sabes

Targeted cortical reorganization using optogenetics in non-human primates.

Yazdan-Shahmorad A, Silversmith DB, Kharazia V, Sabes PN

Widespread optogenetic expression in macaque cortex obtained with MR-guided, convection enhanced delivery (CED) of AAV vector to the thalamus.

Yazdan-Shahmorad A, Tian N, Kharazia V, Samaranch L, Kells A, Bringas J, He J, Bankiewicz K, Sabes PN

A silicon carbide array for electrocorticography and peripheral nerve recording.

Diaz-Botia CA, Luna LE, Neely RM, Chamanzar M, Carraro C, Carmena JM, Sabes PN, Maboudian R, Maharbiz MM

Neural Representation and Causal Models in Motor Cortex.

Chaisanguanthum KS, Shen HH, Sabes PN

A Large-Scale Interface for Optogenetic Stimulation and Recording in Nonhuman Primates.

Yazdan-Shahmorad A, Diaz-Botia C, Hanson TL, Kharazia V, Ledochowitsch P, Maharbiz MM, Sabes PN

Strategies for optical control and simultaneous electrical readout of extended cortical circuits.

Ledochowitsch P, Yazdan-Shahmorad A, Bouchard KE, Diaz-Botia C, Hanson TL, He JW, Seybold BA, Olivero E, Phillips EA, Blanche TJ, Schreiner CE, Hasenstaub A, Chang EF, Sabes PN, Maharbiz MM

Parietal representation of object-based saccades.

Sabes PN, Breznen B, Andersen RA

The role of inertial sensitivity in motor planning.

Sabes PN, Jordan MI, Wolpert DM