Saccadic Adaptation: Scientific & Technical Details

The gain of saccades (i.e., rapid eye movements) can be modified in response to the changing properties of the oculomotor system to maintain ideal saccadic accuracy through sensorimotor adaptive mechanisms, a process known as saccadic adaptation. Our lab is investigating the adaptive control of eye movements in patients with amblyopia using double-step saccadic adaptation paradigms.

Our experimental apparatus allows accurate target presentation using a high bandwidth laser beam galvanometer that is capable of target stimulus stepping based on real-time eye velocity signals from our infrared video-based eye tracker. This setup enables us to perturb our visual stimuli during the eye movements (intra-saccadically) to artificially introduce positional errors, and subsequently monitor the movement made in response to this perturbation.