“…Adaptation via sensory prediction error is considered to be an implicit form of learning. When properly isolated from other processes that contribute to learning in typical adaptation tasks, such as explicit cognitive strategies (McDougle et al, 2016), implicit adaptation appears to be curiously limited: It does not exhibit savings (Avraham et al, 2020; Haith et al, 2015; Morehead et al, 2015), is generally insensitive to both the magnitude and consistency of errors (Bond and Taylor, 2015; Hutter and Taylor, 2018; Avraham et al, 2019), and appears to be impervious to information relevant to task performance (Mazzoni and Krakauer, 2006; Morehead et al, 2017; but see Leow et al, 2018 and Kim et al, 2019). Moreover, as shown in several recent studies, implicit adaptation fails, at least initially, in producing appropriate changes in behavior in response to other simple perturbations like mirror reversals (i.e., when visual feedback is mirrored across an unseen axis with respect to the veridical limb position), a task that should be natural for a canonical forward model to solve (Hadjiosif et al, 2020; Telgen et al, 2014; Wilterson and Taylor, 2020).…”