Figure 2.

Example single-unit data. A, Disparity-tuning curve for a near-tuned neuron from monkey B. Filled circles show mean responses (±SE) to five repetitions of each disparity. The solid curve is a spline fit. The vertical dotted line denotes the disparity of the surround patch (0.075°), which was placed at the steepest slope of the tuning curve. B, Disparity-tuning curve of the same neuron using a narrower range of disparities. C, Neurometric (filled circles) and psychometric (open circles) functions obtained during performance of the fine task. Solid and dashed curves show Weibull fits to the neurometric and psychometric functions, respectively.