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A. David Redish, Ph.D.

Associate Professor, Department of Neuroscience

Alfred P. Sloan Research Fellow for 2003 - 2005

E-mail: redish@umn.edu

Personal Webpage: http://umn.edu/~redish/

Research Interests:

Modern neuroscience sees the brain as an information-processing device. Understanding how the brain processes information requires understanding the representations used by the network of neurons that compose the brain. However, representations in the brain are distributed: each cell carries only a small portion of the total information. I am interested in questions of how neural structures work together to create systems able to accomplish behavioral tasks.

More specifically, we have ongoing projects in

- computational models of addiction,

- the dynamics of neural ensemble activity in striatum during
learning,

- the dynamics of the hippocampal place cell system during
learning, and

- the interaction between multiple learning systems (such as
hippocampus and striatum) in the ability to accomplish complex tasks.

Selected Publications:

Johnson A, Redish AD. Neural ensembles in CA3 transiently encode paths forward of the animal at a decision point. J Neurosci. 2007 Nov 7;27(45):121:76-89.

Redish AD, Jensen S, Johnson A, Kurth-Nelson Z.   Reconciling reinforcement learning models with behavioral extinction and renewal: implications for addiction, relapse, and problem gambling. Psychol Rev. 2007 Jul;114(3):784-805.

Redish AD, Johnson A. A computational model of craving and obsession. Ann N Y Acad Sci. 2007 May;1104:324-39. Review.

Parthasarathy J, Hogenson J, Erdman AG, Redish AD, Ziaie B. Battery-operated High-bandwidth Multi-channel Wireless Neural Recording System using 802.11b. Conf Proc IEEE Eng Med Biol Soc. 2006;1:5989-92.

Parthasarathy J, Erdman AG, Redish AD, Ziaie B. An Integrated CMOS Bio-potential Amplifier with a Feed-Forward DC Cancellation Topology. Conf Proc IEEE Eng Med Biol Soc. 2006;1:2974-7.

Jackson J, Redish AD. Network dynamics of hippocampal cell-assemblies resemble multiple spatial maps within single tasks. Hippocampus. 2007;17(12):1209-29.

Jackson JC, Johnson A, Redish AD. Hippocampal sharp waves and reactivation during awake states depend on repeated sequential experience. J Neurosci. 2006 Nov 29;26(48):12415-26.

Former Graduate Students:

Jadin Jackson (Ph.D. 2007, Neuroscience, University of Minnesota).

Adam Johnson (Ph.D. 2008, Neuroscience, University of Minnesota).

Neil Schmitzer-Torbert (Ph.D. 2004, Neuroscience, University of Minnesota).