TY - GEN
T1 - Reconstructing stimulus velocity from neuronal responses in area MT
AU - Bair, Wyeth
AU - Cavanaugh, James R.
AU - Movshon, J. Anthony
PY - 1997
Y1 - 1997
N2 - We employed a white-noise velocity signal to study the dynamics of the response of single neurons in the cortical area MT to visual motion. Responses were quantified using reverse correlation, optimal linear reconstruction filters, and reconstruction signal-to-noise ratio (SNR). The SNR and lower bound estimates of information rate were lower than we expected. Ninety percent of the information was transmitted below 18 Hz, and the highest lower bound on bit rate was 12 bits/s. A simulated opponent motion energy sub-unit with Poisson spike statistics was able to out-perform the MT neurons. The temporal integration window, measured from the reverse correlation half-width, ranged from 30-90 ms. The window was narrower when a stimulus moved faster, but did not change when temporal frequency was held constant.
AB - We employed a white-noise velocity signal to study the dynamics of the response of single neurons in the cortical area MT to visual motion. Responses were quantified using reverse correlation, optimal linear reconstruction filters, and reconstruction signal-to-noise ratio (SNR). The SNR and lower bound estimates of information rate were lower than we expected. Ninety percent of the information was transmitted below 18 Hz, and the highest lower bound on bit rate was 12 bits/s. A simulated opponent motion energy sub-unit with Poisson spike statistics was able to out-perform the MT neurons. The temporal integration window, measured from the reverse correlation half-width, ranged from 30-90 ms. The window was narrower when a stimulus moved faster, but did not change when temporal frequency was held constant.
UR - http://www.scopus.com/inward/record.url?scp=0038214647&partnerID=8YFLogxK
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M3 - Conference contribution
AN - SCOPUS:0038214647
SN - 0262100657
SN - 9780262100656
T3 - Advances in Neural Information Processing Systems
SP - 34
EP - 40
BT - Advances in Neural Information Processing Systems 9 - Proceedings of the 1996 Conference, NIPS 1996
PB - Neural information processing systems foundation
T2 - 10th Annual Conference on Neural Information Processing Systems, NIPS 1996
Y2 - 2 December 1996 through 5 December 1996
ER -