TY  - JOUR
PY  - 2013//
TI  - Neuromimetic model of saccades for localizing deficits in an atypical eye-movement pathology
JO  - Journal of translational medicine
A1  - Daye, Pierre M.
A1  - Optican, Lance M.
A1  - Roze, Emmanuel
A1  - Gaymard, Bertrand
A1  - Pouget, Pierre
SP  - 125
EP  - 125
VL  - 11
IS  - 1
N2  - BACKGROUND: When patients with ocular motor deficits come to the clinic, in numerous situations it is hard to relate their behavior to one or several deficient neural structures. We sought to demonstrate that neuromimetic models of the ocular motor brainstem could be used to test assumptions of the neural deficits linked to a patient's behavior. METHODS: Eye movements of a patient with unexplained neurological pathology were recorded. We analyzed the patient's behavior in terms of a neuromimetic saccadic model of the ocular motor brainstem to formulate a pathophysiological hypothesis. RESULTS: Our patient exhibited unusual ocular motor disorders including increased saccadic peak velocities (up to ~1000 deg/s), dynamic saccadic overshoot, left-right asymmetrical post-saccadic drift and saccadic oscillations. We show that our model accurately reproduced the observed disorders allowing us to hypothesize that those disorders originated from a deficit in the cerebellum. CONCLUSION: Our study suggests that neuromimetic models could be a good complement to traditional clinical tools. Our behavioral analyses combined with the model simulations localized four different features of abnormal eye movements to cerebellar dysfunction. Importantly, this assumption is consistent with clinical symptoms.<p />  <p>Language: en</p>
LA  - en
SN  - 1479-5876
UR  - http://dx.doi.org/10.1186/1479-5876-11-125
ID  - ref1
ER  -