Posts classified under: Learning and Memory

Felix Schweizer, Ph.D.

Biography

Felix E. Schweizer was born in Basel, Switzerland and conducted his graduate research in the laboratory of Prof. Max M. Burger under the direction of Dr. Theo Schafer. He received his PhD degree in biochemistry summa cum laude from the University of Basel in 1989. From 1990 to 1994, he was a post-doctoral fellow in the Department of Molecular and Cellular Physiology at Stanford University in the laboratory of Prof. Richard W. Tsien. From 1994 to 1998, he was postdoctoral fellow in the Department of Neurobiology at Duke University in the laboratory of Professor George J. Augustine. Dr. Schweizer joined the Department of Neurobiology in the David Geffen School of Medicine at UCLA in 1998 as Assistant Professor and was promoted to Full Professor in 2010. Dr. Schweizer’s research interests concern the molecular mechanisms by which neurons communicate, the regulation of communication by neurons and how alterations in neuronal communication might contribute to neuronal diseases. The Schweizer laboratory uses electrophysiological and optical tools to investigate the dynamic molecular mechanisms underlying the regulation of neurotransmitter release. We are particularly interested in the role of protein ubiquitination in regulating neuronal excitability and synaptic transmission. In collaboration with Dr. James Wohlschlegel, we used multiplexed SILAC and identified synaptic proteins that are dynamically regulated. More recently, in collaboration with Dr. David Krantz, we are using pesticides linked to neuro-degenerative disorders as unbiased tools identify novel pathways that might be involved in early signs of degeneration. In addition, we are characterizing transmission at the first synapse of the vestibular system, i.e. between utricular sensory hair cells and primary afferent neurons. In collaboration with Dr. Larry Hoffman we are finding that changing the gravitational load alters synaptic structures. We are now using serial EM and EM tomography in addition to physiology and cell biology to define in more detail the transfer function between head-movement input and afferent nerve-firing output.

Ladan Shams, Ph.D.

Publications

A selected list of publications:

Watkins, S, Shams, L, Tanaka, S, et al.   Sound alters activity in human V1 in association with illusory visual perception, NeuroImage , 2006; .
Shams, L, Iwaki, S, Chawla, A, et al.   Early modulation of visual cortex by sound: an MEG study, Neuroscience letters, 2005; 378(2): 76-81.
Shams, L, Ma, WJ, & Beierholm, U.   Sound-induced flash illusion as an optimal percept, Neuroreport, , 2005; 16(17): 1923-7.
Violentyev, A, Shimojo, S, & Shams, L.   Touch-induced visual illusion, Neuroreport, 2005; 16(10): 1107-10.
Shams, L., & von der Malsburg, C.   Acquisition of visual shape primitives, Vision Research, 2002; Vol. 42 (17): 2105-2122.
Shams, L.   Integration in the brain: The subconscious alteration of visual perception by cross-modal integration, Science & Consciousness Review, 2002; October(No. 1 ): .
Bhattacharya, J., Shams, L., S. & Shimojo, S.   Sound-induced illusory flash perception: Role of Gamma band responses, NeuroReport, 2002; Vol. 13: 1727-1730.
Shams, L. & von der Malsburg, C.   The role of complex cells in object recognition, Vision Research, 2002; Vol. 42 (22): 2547-2554.
Shams, L., Kamitani, Y., & Shimojo, S.   Visual illusion induced by sound, Cognitive Brain Research, 2002; Vol. 14: 147-152.
Shams, L., Brady, M. & Schaal, S.   Graph-matching vs. entropy-based methods for object detection, Neural Networks, 2001; 14: 345-354.
Shimojo, S., & Shams, L.   Sensory modalities are not separate modalities: plasticity and interactions, Current Opinion In Neurobiology, 2001; Vol. 11 (114): 505-509.
Shams, L., Kamitani, Y., Thompson, S. & Shimojo, S.   Sound alters visual evoked potentials in humans, NeuroReport, 2001; Vol. 12 (17): 3849-3852.
Shimojo, S., Scheier, C., Shams, L., & Watanabe, K.   Vision beyond visual modality: Auditory effects on visual perception, Journal of the Acoustical Society of Japan, Special Issue on Hearing and the Brain, 2001; Vol. 22 (2): .
Shams, L., Kamitani, Y., & Shimojo, S.   What you see is what you hear, Nature, 2000; Vol. 408: 788.
Shams, L., & von der Malsburg, C.   Are Object Shape Primitives Learnable? , NeuroComputing, 1999; Vol. 26-27: 855-863.

Daniel Silverman, M.D., Ph.D.

Biography

Daniel H. Silverman, M.D., Ph.D., is Head of the Neuronuclear Imaging Section of the Ahmanson Translational Imaging Division at UCLA Medical Center, on the Executive Committee of the UCLA Alzheimer’s Disease Research Center, and a Professor in the Department of Molecular and Medical Pharmacology, University of California, Los Angeles. He obtained his Ph.D. in Biological Chemistry at Harvard University, and postdoctoral research training in Biochemistry and Molecular Pharmacology at Harvard Medical School. He obtained his M.D. from The Ohio State University College of Medicine, subsequently completed post-M.D. training at UCLA, and then obtained certification from both the American Board of Internal Medicine and the American Board of Nuclear Medicine.