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Dharmendra S. Modha

My Work and Thoughts.

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Jim Olds

March 20, 2010 By dmodha

I had enormous good fortune to spend time with Jim Olds.

Dr. James Olds is the Director of the Krasnow Institute for Advanced Study, an independent research institution located on the campus of George Mason University in Fairfax Virginia. Concurrently he is the Shelley Krasnow University Professor of Neuroscience at George Mason University and Chair of the Department of Molecular Neuroscience. He has an additional academic faculty appointment at the Department of Anatomy and Cell Biology at the Uniformed Services University of the Health Sciences in Bethesda, Maryland.  Olds received his bachelors of arts degree in Chemistry from Amherst College in 1978. After graduating, Olds interned on Capitol Hill for the United States House of Representatives researching chemical aspects of mid-future electrical energy alternatives for the New England Congressional delegation. Olds entered the Neuroscience Ph.D. program at the University of Michigan in 1983, and received his Ph.D. (1987) in neurosciences from that institution. Following the award of his doctorate, Dr. Olds continued his training as a post-doctoral fellow in the Laboratory of Molecular and Cellular Neurobiology (LMCN), NINDS at the National Institutes of Health. Commencing in 1989, Olds published a series of papers which, for the first time, imaged learning-specific changes in the distribution of the activated form of the enzyme protein kinase C in the brains of both invertebrates and mammals. For this work and follow-up studies, Dr. Olds received the NIH award of merit in 1993. In 1994 Dr. Olds was appointed as a senior staff fellow in the newly formed Laboratory of Adaptive Systems (LAS), NINDS. During this period of time Dr. Olds founded the internet news group “bionet.neurosciences”. Thousands of articles have been posted to this internet news group from all over the world. Dr. Olds shares authorship of two U.S. Patents for novel CCD-based imaging devices which image radioligand distributions directly from biological tissue.  During his government service, Dr. Olds also served as U.S. project officer on two successive government R&D contracts to develop novel biologically-based computer algorithms which emulate human associative learning and image comprehension. In 1995 Dr. Olds moved to the private sector to become the Executive Director of the American Association of Anatomists, a professional scientific society representing some 2,500 biomedical scientists. In August 2004, he was named editor-in-chief of the journal Biological Bulletin.  In a volunteer role, Olds served as a political appointee on the Commonwealth Alzheimer’s and Related Diseases Commission from 1998-2004 under both Republican and Democratic governors. Dr. Olds has served on grant review panels for the National Institutes of Health, the National Science Foundation and the Office of Naval Research. He served on the American Association of Anatomist’s Public Affairs Committee from 1995-2002. Dr. Olds also serves on the editorial board of the Journal of Cognitive Dynamics. As a scientist and public policy expert Dr. Olds has been an invited speaker to many domestic and international meetings to speak on topics ranging from brain imaging to global warming. He currently serves on the Board of Trustees of the George Mason University Foundation.

Filed Under: Brain-inspired Computing, Interesting People

Nobelist Albert Fert

March 11, 2010 By dmodha

My distinguished colleague, Dr. Stuart Parkin, invited Dr. Albert Fert to IBM Research – Almaden today, and also arranged for me to meet with Dr. Fert.

Bio: Albert Fert (born 7 March 1938 in Carcassonne, Aude) is a French physicist and one of the discoverers of giant magnetoresistance which brought about a breakthrough in gigabyte hard disks. He is currently professor at Universit Paris-Sud in Orsay and scientific director of a joint laboratory (‘Unit mixte de recherche’) between the Centre national de la recherche scientifique (National Scientific Research Centre) and Thales Group. Also, he is an Adjunct professor of physics at Michigan State University. He was awarded the 2007 Nobel Prize in Physics together with Peter Grnberg.

Filed Under: Brain-inspired Computing, Interesting People

Roger Traub

February 25, 2010 By dmodha

Today, we had the privilege of spending a day with a genuine pioneer in computational neuroscience.

ABSTRACT:

This talk will review two of the major types of gamma (~40 Hz) oscillations in the cortex: oscillations evoked by sensory simulation, which are transient; and longer-lasting, so-called persistent gamma oscillations. Sensory-evoked oscillations have been proposed, by Wolf Singer and colleagues, to play a role in perception. Persistent gamma occurs in background EEG rhythms, especially in the hippocampus during locomotion. The cellular mechanisms of the two sorts of oscillation – as studied in vitro and with modeling – are (for the most part) different. Gamma oscillations also occur in other contexts as well: during slow-wave sleep, and in the memory phase of certain cognitive tasks. The cellular mechanisms here are less understood, but probably resemble persistent gamma. Intrinsic cell properties, excitatory and inhibitory synapses, and gap junctions all play roles, but the details depend on the oscillation type and cortical region.

BIO:

Roger D. Traub (b. February 26, 1946 in Washington, DC) majored in mathematics at Princeton University. He started graduate school in mathematics at the Massachusetts Institute of Technology in 1967, and shortly after passing his Ph.D. qualifying exam, he moved to the University of Pennsylvania School of Medicine where he received his M.D. in 1972. Dr. Traub has subsequently pursued a career as a neurologist, professor and researcher at several institutions. He currently holds an appointment with the Department of Physical Sciences, IBM T.J. Watson Research Center (Yorktown Heights, NY) and keeps teaching at SUNY Downstate Medical Center, Brooklyn.

Over the course of his career, Dr. Traub has received numerous distinctions, including two IBM Outstanding Innovation Awards (1983, 1989), an American Epilepsy Society’s Research Recognition Award in 1991, a Principal Research Fellowship awarded by the Wellcome Trust (UK) in 1997 and recently, a Humboldt Research Award (2007). He has served as Action Editor or Editorial Board Member for several journals.

Dr. Traub’s research focuses on realistic and detailed modeling of brain waves and seizures in an effort to treat and cure epilepsy. He has made significant contributions to elucidating the mechanisms by which intrinsic cell properties, chemical synapses, and gap junctions can cooperate to shape population output. For more information, visit http://www.downstate.edu/pharmacology/faculty/traub.html

Filed Under: Brain-inspired Computing, Interesting People

ACM Gordon Bell Prize for “The Cat is Out of the Bag”

November 19, 2009 By dmodha

Today, at the Supercomputing 2009 conference in Portland, Oregon, our paper “The Cat is Out of the Bag” was awarded the ACM Gordon Bell Prize.

The ACM Gordon Bell Prize has been awarded since 1987 to recognize outstanding achievement in high-performance computing. It is now administered by the Association for Computing Machinery (ACM), with financial support for the stipend provided by Gordon Bell, a pioneer in high-performance and parallel computing.

The purpose of the prize is to track the progress of leading-edge technical computing, namely simulation, modeling and large-scale data analysis as applied to science, engineering or other fields. In addition to the main ACM Gordon Bell Prize, the Bell Prize Committee may, at its discretion, grant a special award to recognize an achievement in a related area such as price/performance, usage of innovative techniques or non-traditional types of computation.

From left to right: Steven K. Esser, Horst D. Simon, Dharmendra S. Modha,
Mateo Valero (Chair, Gordon Bell Prize Committee), Rajagopal Ananthanarayanan

Filed Under: Accomplishments, Brain-inspired Computing, Papers, Prizes

The Cat is Out of the Bag and BlueMatter

November 18, 2009 By dmodha