Neuroscience Graduate Program at UCSF
Information Processing in Cortical Microcircuits: Optogenetic Tools and Implications for Psychiatric Disease
We study microcircuits in the prefrontal cortex in order to understand how the properties of prefrontal neurons and their connections give rise to emergent patterns of circuit activity. We are excited about this approach, because we believe that these emergent patterns of activity play critical roles in both normal cognition and the abnormal behaviors associated with neuropsychiatric disorders such as schizophrenia and autism. Thus, we hope that by understanding the process through which these patterns are generated, we will elucidate the kinds of computations that these circuits perform, and obtain a “map” of circuit function that will help us to identify ways of correcting circuit dysfunction in disease states. We use a combination of techniques including optogenetics, brain slice electrophysiology, computational modeling, whole cell patch clamp recording, calcium imaging, EEG recording, local drug infusion in vivo, and behavioral assays.
- How are different classes of neurons in the prefrontal cortex "wired up?"
- How do dopamine and other neuromodulators affect cells and synapses in ways that can alter circuit function and behavior?
- What are the roles of inhibitory interneurons and oscillations in circuit function?
- How are prefrontal circuits altered in diseases such as schizophrenia, autism, and chronic pain?
B.S., Duke University
B.S., University of Pennsylvania
Ph.D., U. of Copenhagen
M.D., Ph.D., UCSD
M.D., Ph.D., UCSF
B.S., CSU-Los Angeles
M.D. / Ph.D., U. of Colorado
B.S., Stanford University
- Gamma rhythms link prefrontal interneuron dysfunction with cognitive inflexibility in Dlx5/6+/- mice. Cho KKA, Hoch R, Lee AT, Patel T, Rubenstein JL, and Sohal VS. Neuron, 2015.
- A class of GABAergic neurons in the prefrontal cortex sends long-range projections to the nucleus accumbens and elicits acute avoidance behavior. Lee AT, Vogt D, Rubenstein JR, and Sohal VS. Journal of Neuroscience, 2014.
- Optogenetic approaches for investigating neural pathways implicated in schizophrenia and related disorders. Cho KKA and Sohal VS . Human Molecular Genetics, 2014.
- Pyramidal neurons in prefrontal cortex receive subtype-specific forms of excitation and inhibition. Lee AT, Gee SM, Vogt D, Rubenstein JL, and Sohal VS. Neuron, 2014.
- Synaptic activity unmasks dopamine D2 receptor modulation of a specific class of layer V pyramidal neurons in prefrontal cortex. Gee S, Ellwood I, Patel T, Luongo F, Deisseroth K, and Sohal VS. Journal of Neuroscience, 2012.
- Insights into cortical oscillations arising from optogenetic studies. Sohal VS. Biological Psychiatry, 2012.
- Parvalbumin neurons and gamma rhythms enhance cortical microcircuit performance. Sohal VS, Zhang F, Yizhar O, and Deisseroth KD. Nature, 2009.
Vikaas Sohal, M.D./Ph.D.
UCSF Mision Bay, Box 0444
675 Nelson Rising Lane, room 415C
San Francisco, CA 94158