Figure 2.

Training effects on behavior and interneuronal correlations. (A) Vestibular psychophysical thresholds from 5 monkeys (denoted by different symbol shapes) decreased gradually during training on a heading discrimination task. Solid curves: best fitting exponential functions for each animal. Thresholds are shown for the vestibular condition, not the visual condition, because optic flow stimuli were introduced later in training, and also because visual motion coherence varied across sessions to match visual and vestibular sensitivity (Gu et al., 2008a). (B) Distributions of noise correlations for ‘naïve’ (top, n=38) and ‘trained’ (bottom, n=89) animals. Black bars indicate r_noise values that are significantly different from zero. Arrows: population means. (C) Average (± sem) time course of noise correlations in ‘trained’ (red, n=89) and ‘naïve’ animals (blue, n=38).