The nervous system is known to exhibit synchronous rhythms over a wide range of frequencies. The implication is that this activity plays a functional role in behavior and cognition. Often these rhythms are highly complex, displaying strongly intermittent characteristics. Experiments to test the significance of synchrony and partial synchrony are difficult because they involve large numbers of neurons and ways to manipulate the rhythms are limited. A thorough understanding of the mechanisms responsible for synchronized states is necessary to probe behavioral and cognitive questions. Theoretical knowledge of how the rhythms can be switched on and off, what controls the frequency, synchrony, and temporal stability may provide tools for manipulating rhythms in vivo and better assess their functional significance. This proposal aims to understand synchrony and partial synchrony by using mathematical and theoretical methods in conjunction with numerical simulations. The experiments and simulations will guide the development of reduced models that are tenable to analysis. This application will form the foundation of a career development program for the candidate to become established in the area of theoretical and computational neuroscience.

Agency
National Institute of Health (NIH)
Institute
National Institute of Mental Health (NIMH)
Type
Research Scientist Development Award - Research & Training (K01)
Project #
5K01MH001508-06
Application #
6528049
Study Section
Cognitive Functional Neuroscience Review Committee (CFN)
Program Officer
Desmond, Nancy L
Project Start
1998-09-01
Project End
2003-07-31
Budget Start
2002-08-01
Budget End
2003-07-31
Support Year
6
Fiscal Year
2002
Total Cost
$114,167
Indirect Cost
Name
University of Pittsburgh
Department
Biostatistics & Other Math Sci
Type
Schools of Arts and Sciences
DUNS #
053785812
City
Pittsburgh
State
PA
Country
United States
Zip Code
15213
Shafi, M; Zhou, Y; Quintana, J et al. (2007) Variability in neuronal activity in primate cortex during working memory tasks. Neuroscience 146:1082-108
Rubin, Jonathan E; Gerkin, Richard C; Bi, Guo-Qiang et al. (2005) Calcium time course as a signal for spike-timing-dependent plasticity. J Neurophysiol 93:2600-13
Moldakarimov, Samat; Rollenhagen, Julianne E; Olson, Carl R et al. (2005) Competitive dynamics in cortical responses to visual stimuli. J Neurophysiol 94:3388-96
Rubin, J; Terman, D; Chow, C (2001) Localized bumps of activity sustained by inhibition in a two-layer thalamic network. J Comput Neurosci 10:313-31
Chow, C C; Kopell, N (2000) Dynamics of spiking neurons with electrical coupling. Neural Comput 12:1643-78
Mar, D J; Chow, C C; Gerstner, W et al. (1999) Noise shaping in populations of coupled model neurons. Proc Natl Acad Sci U S A 96:10450-5