Figure 5. Evidence for multiple components and sites of learning.

A: Trial course of behavioral learning over >1,000 repetitions of the same learning trial. Symbols show learned eye velocity averaged in bins of 10 trials, dashed and solid curves are fits to the data with single or sum of two exponential functions, respectively. Inset shows first 100 trials in greater detail. B: Eye and target velocity in an “error clamp” trial used to probe retention. Dashed trace shows target velocity and continuous traces show eye velocity. Note that target velocity in the learning direction tracks eye velocity so that retention can be probed without any error. C: Decay of learned eye velocity across 10 error clamp trials. Blue and orange traces show retention after 20 learning trials versus after >1,000 learning trials. Panel A is reproduced from Hall et al. (2018); B and C are reproduced from Herzfeld et al. (2020), all with permission.