2P056 カエル網膜における同期的周期的発火の阻害が視覚誘発性逃避行動に与える影響(2003年度日本基礎心理学会第22回大会優秀発表賞)

概要

論文の詳細を見る
In the frog retina OFF-sustained type ganglion cells (dimming detectors) generate oscillatory synchronized discharges with a light which is dimming. To elucidate the function of the oscillatory synchronization (OS) in the retina we performed behavioral experiments and multielectrode recordings from dimming detectors. Frogs exhibited an escape behavior when an expanding dark spot was presented on a computer monitor. The probability of the escape behavior was higher as the final size of the expanding dark spot was increased. Multi-electrode recordings from the isolated retina revealed that the OS was enhanced as the final size of the expanding dark spot was increased. The OS could be blocked when the isolated retina was superfused with bicuculline, a GABA_A receptor blocker. Injection of bicuculline into the eyes of the frog significantly suppressed the escape behavior but did not affect the optokinetic responses to a drifting grating. We conclude that the OS of dimming detectors in the retina is essential for triggering the escape behavior.
日本基礎心理学会の論文
2004-09-30