Presentation 2014-09-26
Acquisition of predictive eye movement in response to a periodic optokinetic visual stimulation in human and fish
Shuntaro MIKI, Kohei URASE, Robert BAKER, Yutaka HIRATA,
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Abstract(in English) The optokinetic response (OKR) of the eye is induced to follow a large field visual motion. The gain of the OKR (eye velocity / visual motion velocity) is about 0.6 at 1/8Hz in naive goldfish. If the same periodic visual stimulus is given continuously, the OKR gain increases up to 1.0. In addition to gain increase, goldfish acquires predictive OKR that is named period tuning (PT). Namely, after continuous exposure to a periodic visual motion, goldfish OKR velocity decreases as if it predicts the timing of the change in visual motion direction. Even if the animal is exposed to complete darkness after the acquisition of PT, its eye velocity follows the similar trajectory to that during training for a while without any visual stimulation. This eye movement in the dark may share a common mechanism with optokinetic after nystagmus (OKAN) that is also evoked in the dark after prolonged constant velocity visual stimulation, and considered to reflect characteristics of the velocity storage mechanism (VSM). To investigate the relationship between PT and VSM, we conducted a series of behavioural experiments in human, goldfish, carp, medaka, and zebrafish. We demonstrate that ability to acquire PT is highly dependent on OKAN. This result suggests that VSM is a key mechanism for PT.
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Keyword(in English) goldfish / zebrafish / Optokinetic response / OKAN / prediction / motor learning
Paper # HIP2014-52
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Committee HIP
Conference Date 2014/9/18(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Acquisition of predictive eye movement in response to a periodic optokinetic visual stimulation in human and fish
Sub Title (in English)
Keyword(1) goldfish
Keyword(2) zebrafish
Keyword(3) Optokinetic response
Keyword(4) OKAN
Keyword(5) prediction
Keyword(6) motor learning
1st Author's Name Shuntaro MIKI
1st Author's Affiliation Chubu University College of Engineering()
2nd Author's Name Kohei URASE
2nd Author's Affiliation Chubu University College of Engineering
3rd Author's Name Robert BAKER
3rd Author's Affiliation New York University Medical School
4th Author's Name Yutaka HIRATA
4th Author's Affiliation Chubu University College of Engineering
Date 2014-09-26
Paper # HIP2014-52
Volume (vol) vol.114
Number (no) 226
Page pp.pp.-
#Pages 6
Date of Issue