ANIMAL	Macaca mulatta
PREP	awake, fixation, discrimination
DATA TYPE	extracellular spike times
CELL TYPE	V5/MT cells
N	26 cells

Summary

This data set contains responses to repeated presentations of particular incoherent, random dot patterns. Specific analysis of this data is described in Bair and Koch (1996). The data for each neuron are presented here in two files, one containing trials where the randomization seed was varied from trial to trial (file name ending in v) and one where the randomization seed was held constant (file name ending in c). Each trial has two variable parameters, direction and response. The direction value has no meaning by itself because the dots were incoherent, thus there was no directional signal. The response value indicates whether the subject chose the "correct" or "incorrect" direction, meaning the direction assigned to the trial, even though direction has no influence on the stimulus pattern (0-wrong, 1-correct). These trials were interleaved with higher coherence trials, thus the subject had incentive to work and did not know that these were zero-coherence trials. All data files are from subject e.

The stimulus was a sparse, dynamic random dot pattern lasting for typically 2 seconds. The motion coherence was zero. A full description of the stimulus is provided in Britten et al. (1992).

Electrophysiological Methods

Britten KH, Shadlen MN, Newsome WT, Movshon JA (1992) The analysis of visual motion: a comparison of neuronal and psychophysical performance. J Neurosci 12:4745-4765.

Published analyses

• Newsome WT, Britten KH, Movshon JA (1989) Neuronal correlates of a perceptual decision. Nature 341:52-54.
• Britten KH, Shadlen MN, Newsome WT, Movshon JA (1992) The analysis of visual motion: a comparison of neuronal and psychophysical performance. J Neurosci 12:4745-4765.
• Britten KH, Shadlen MN, Newsome WT, Movshon JA (1993) Response of neurons in macaque MT to stochastic motion signals. Visual Neurosci 10:1157-1169.
• Bair W, Koch C, Newsome WT, Britten KH (1994) Power Spectrum Analysis of Bursting Cells in Area MT in the Behaving Monkey. J Neurosci 14:2870-2892.
• Bair W (1995) Analysis of Temporal Structure in Spike Trains of Visual Cortical Area MT. Ph.D. Thesis, California Institute of Technology.
• Britten KH, Newsome WT, Shadlen MN, Celebrini S, Movshon JA (1996) A relationship between behavioral choice and the visual responses of neurons in macaque MT. Visual Neurosci 13:87-100.
• Shadlen MN, Britten KH, Newsome WT, Movshon JA (1996) A computational analysis of the relationship between neuronal and behavioral responses to visual motion. J Neurosci 16:1486-1510.
• Bair W, Koch C (1996) Temporal precision of spike trains in extrastriate cortex. Neural Comp 8:1185-1202.