Professor of Physics
After working in nonlinear dynamics and nonequilibrium pattern formation for many years, my research group has begun studying problems in theoretical neurobiology in collaboration with Professor Richard Mooney's experimental group on birdsong at Duke University. The main scientific question we are interested in is how songbirds learn to sing their song, which is a leading experimental paradigm for the broader neurobiology question of how animals learn behaviors that involve sequences of time. My group is interested in problems arising at the cellular and network levels (as opposed to behavioral levels). One example is understanding the origin, mechanism, and eventually the purpose of highly sparse high-frequency bursts of spikes that are observed in the nucleus HVC of songbird brains (this is the first place where auditory information seems to be combined with motor information). A second example is to understand how auditory and motor information are combined, e.g., there are data that suggests that the same group of neurons that instruct the respiratory and syringeal muscles to produce song (again in nucleus HVC) are also involved in recognizing song. A third example is trying to understand changes in anatomy (increases in spine stability) that were recently observed in living brain tissue as a bird learns its song.
Greenside, HS. "High-frequency intermittency of strange attractors." Bulletin Of The American Physical Society 26.3 (1981): 444-444. (Academic Article)
Hamann, DR, Mattheiss, LF, and Greenside, HS. "Comparative LCAO-LAPW study of C1 chemisorption on the Ag(001) surface." Physical Review B 24.10 (1981): 6151-6155. Full Text
Bachelet, GB, Greenside, HS, Baraff, GA, and Schlter, M. "Structural-energy calculations based on norm-conserving pseudopotentials and localized Gaussian orbitals." Physical Review B 24.8 (1981): 4745-4752. Full Text
Greenside, HS, Blount, EI, and Varma, CM. "Possible coexisting superconducting and magnetic states." Physical Review Letters 46.1 (1981): 49-53. Full Text
Greenside, HS, and Helfand, E. "NUMERICAL INTEGRATION OF STOCHASTIC DIFFERENTIAL EQUATIONS - 2." The Bell System technical journal 60.8 (1981): 1927-1940.
Greenside, HS, and Hamann, DR. "Self-consistent lcao study of the square-root-2xsquare-root-2 cl adlayer on pd(001) and ag(001) surfaces - band-structure and density of states." Bulletin Of The American Physical Society 25.3 (1980): 193-193. (Academic Article)
Blum, JJ, and Greenside, H. "Particle ejection from the cytoproct of Tetrahymena." J Protozool 23.4 (November 1976): 500-502.
Ridgway, RW, Greenside, HS, and Freedman, HH. "Cocatalysis of Phenolate Phosphorylation in Biphasic Media." Journal of the American Chemical Society 98.7 (March 1, 1976): 1979-1980. (Letter) Full Text
Zoldi, SM, Liu, J, Bajaj, KMS, Greenside, HS, and Ahlers, G. "Extensive Scaling and Nonuniformity of the Karhunen-Loève Decomposition for the Spiral-Defect Chaos State." Full Text
Zoldi, SM, and Greenside, HS. "Comment on "Optimal Periodic Orbits of Chaotic Systems"." Full Text