Abstract
1. 1. A new opto-electronic method has been used to measure spontaneous eye movements in a lightly restrained unanaesthetized marine teleost fish (Parore). 2. 2. The normal scanning pattern of eye movement is similar to that previously described in goldfish. 3. 3. The effects of cooling on eye movements were investigated by 2°C step changes down from ambient temperature (13–14°C). 4. 4. Lowered temperature altered the scanning pattern, decreased saccade velocity, increased mean saccade amplitude and impaired the ability of the fish to hold the eye stationary between saccades. 5. 5. All eye movements stopped at temperatures around 6°C, but could be restored by subsequent warming.
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