Carrie Barr

Results We first examined the relationship between saccadic and pursuit eye movements when animals tracked a single target using the step-ramp pursuit task (Fig. 1). We are interested in how the presence of a saccadic eye movement at the initiation of pursuit alters the pursuit eye velocity that immediately follows the saccade.

Adaptation model For the model, we chose parameters that best matched the average response dynamics (decaying to 30% of the initial response) to brief sequential presentations reported for adaptation experiments in macaques and mice (Nelson, 1991; Priebe et al., 2002; Motter, 2006; Patterson et al., 2013; Jin et al., 2019; Jin and Glickfeld, 2020). The decay time constant τdecay for all simulations was 60 ms and the recovery time constant τrecovery varied between 100 and 900 ms.

Abstract Animals use a combination of eye-movements to track moving objects in the visual world. The different movement types need to coordinate for successful tracking, requiring interaction between the systems involved. Here, we study such interaction between the saccades and smooth pursuit eye movement system in marmosets. Using single target pursuit, we show that saccades cause an enhancement in pursuit following the saccades.