Leadership

Michael Brainard, Ph.D.

Director

[email protected]

 

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.

Journal of neural engineering

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.

eLife

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

An Open Resource for Non-human Primate Optogenetics.

Neuron

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.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

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

The “sewing machine” for minimally invasive neural recording

bioRxiv

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

Novel techniques for large-scale manipulations of cortical networks in non-human primates.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

Yazdan-Shahmorad A, Silversmith DB, Sabes PN

Targeted cortical reorganization using optogenetics in non-human primates.

eLife

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

Superior arm-movement decoding from cortex with a new, unsupervised-learning algorithm.

Journal of neural engineering

Makin JG, O'Doherty JE, Cardoso MMB, Sabes PN

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

Journal of neuroscience methods

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.

Journal of neural engineering

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.

The Journal of neuroscience : the official journal of the Society for Neuroscience

Chaisanguanthum KS, Shen HH, Sabes PN

Encoding and Decoding of Multi-Channel ICMS in Macaque Somatosensory Cortex.

IEEE transactions on haptics

Dadarlat MC, Sabes PN

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

Neuron

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

Learning to Estimate Dynamical State with Probabilistic Population Codes.

PLoS computational biology

Makin JG, Dichter BK, Sabes PN

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

Journal of neuroscience methods

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

Motor variability arises from a slow random walk in neural state.

The Journal of neuroscience : the official journal of the Society for Neuroscience

Chaisanguanthum KS, Shen HH, Sabes PN

Learning multisensory integration and coordinate transformation via density estimation.

PLoS computational biology

Makin JG, Fellows MR, Sabes PN

How each movement changes the next: an experimental and theoretical study of fast adaptive priors in reaching.

The Journal of neuroscience : the official journal of the Society for Neuroscience

Verstynen T, Sabes PN

Heterogeneous representations in the superior parietal lobule are common across reaches to visual and proprioceptive targets.

The Journal of neuroscience : the official journal of the Society for Neuroscience

McGuire LM, Sabes PN

Visual-shift adaptation is composed of separable sensory and task-dependent effects.

Journal of neurophysiology

Simani MC, McGuire LM, Sabes PN

Multisensory integration during motor planning.

The Journal of neuroscience : the official journal of the Society for Neuroscience

Sober SJ, Sabes PN

Parietal representation of object-based saccades.

Journal of neurophysiology

Sabes PN, Breznen B, Andersen RA

The planning and control of reaching movements.

Current opinion in neurobiology

Sabes PN

The role of inertial sensitivity in motor planning.

The Journal of neuroscience : the official journal of the Society for Neuroscience

Sabes PN, Jordan MI, Wolpert DM

Obstacle avoidance and a perturbation sensitivity model for motor planning.

The Journal of neuroscience : the official journal of the Society for Neuroscience

Sabes PN, Jordan MI

New icosahedral phases in Ti-transition-metal alloys.

Physical review. B, Condensed matter

Kelton KF, Gibbons PC, Sabes PN