NDLI: Short-term modification of vergence ramp eye movements in the convergent direction

Content Provider	IEEE Xplore Digital Library
Author	Yaramothu, C. Alvarez, T.L.
Copyright Year	2014
Description	Author affiliation: Dept. of Biomed. Eng., New Jersey Inst. of Technol., Newark, NJ, USA (Yaramothu, C.; Alvarez, T.L.)
Abstract	Prior oculomotor studies have investigated the various effects of short-term modification on vergence, saccadic and smooth pursuit eye movements. Previous vergence studies have concentrated on step modification stimuli. Few have investigated the effects of modification on vergence ramp movements. Thus, this study explores the trends observed within a short-term modification experiment studying smoothly tracking vergence eye movements responses elicited from convergent ramp stimuli. A short-term modification experiment is composed of three phases: baseline, modification and recovery. Baseline and recovery phases contain only test stimuli; whereas, during modification, the subject is presented test and conditioning stimuli in a ratio of 1:5 test to conditioning. The test stimulus was a 0.5 deg/sec vergence ramp presented from a 3 deg vergence angle to a 5 deg vergence angle. The conditioning stimulus was a 2.0 deg/sec ramp presented over the same visual range. The root mean square error (RMSE) was calculated on all slower (0.5 deg/ sec) ramp responses and compared over the three phases. Preliminary data from one subject shows a trend where the RMSE increases within the recovery phase compared to responses recorded from the baseline phase.
Starting Page	1
Ending Page	2
File Size	1893948
Page Count	2
File Format	PDF
ISBN	9781479937288
DOI	10.1109/NEBEC.2014.6972984
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-04-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Root mean square Adaptive control Monitoring Calibration Convergence Instruments Market research
Content Type	Text
Resource Type	Article

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