Figure 5. Manipulating information content through repetition suppression changes behaviour.

(A) Psychometric curves show a strong influence of the relevant feature (colour in a colour trial and motion in a motion trial) and a weak influence of the irrelevant feature (colour in a motion trial and motion in a colour trial), consistent with data in non-human primates (Mante et al., 2013). In addition, suppressing motion inputs affects choices based on motion and suppressing colour inputs affects choices based on colour, but not vice versa. (B) Relevant, but not irrelevant, input adaptation slowed log-reaction times (RTs), and both relevant input adaptation and response adaptation reduced choice accuracies (% correct). This is consistent with a potential neuronal fatigue mechanism whereby repeated exposure to a feature reduces the received input, which would be expected to affect behaviour.

Figure 5—figure supplement 1. Pre- vs. post-training effects of repetition suppression on behavioural performance.

(A) Psychometric curves are shown using the same conventions as in Figure 5A but separately for pre- and post-training. (B) Regression analyses performed on log-reaction times (RTs) and choice accuracies, as shown in Figure 5B, shown separately for pre- and post-training. While effects of relevant sensory input adaptation became more pronounced with training, response adaptation effects diminished.