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Fig. 4. Mean gain of the OCR obtained for different behavioural conditions, in
response to increasing stimuli velocity step. (A) Gains obtained in the
`resting', `standing' and `flying' conditions. The gain was progressively
increased in the higher velocity range of stimuli for each of these three
conditions. (B) Mean gain obtained for the `standing condition' in the
presence of and without a frontal airflow. The corresponding gain curves were
not different. Each point is the mean value ± s.e.m. (N=12) of
responses obtained in the clockwise and anticlockwise directions.