TY  - JOUR
AB  - The compensatory optomotor turning reaction as well as the turning response towards objects play an important role in visual orientation. On the basis of behavioural experiments under precisely defined stimulus conditions it is concluded that in female house-flies these motion-dependent responses are mediated by two parallel control systems with different dynamic and spatial integration properties. One of them (lsquolarge-field systemrsquo) is most sensitive to the motion of large textured patterns and controls the yaw torque mainly at low oscillation frequencies (below 0.1 Hz) of the stimulus panorama. In contrast, the other control system (lsquosmall-field systemrsquo) is tuned to the detection of relatively small moving patterns and shows its strongest responses at high oscillation frequencies (between 1 and 4 Hz), i.e. in a frequency range where the large-field system contributes to the turning response with only a relatively small gain. In free flight, house-flies do not curve smoothly but in sequences of rapid turns which induce retinal large-field motion of continually changing sign (Wagner 1986b). The dynamic properties of the large-field system might thus be interpreted as a simple strategy to almost eliminate the unwanted optomotor yaw torque induced by active self-motion. In contrast, the small-field system might still be operational under these conditions.
DA  - 1987
DO  - 10.1007/BF00610219
KW  - Sensory reception
KW  - Behavior
KW  - Physiology
LA  - eng
IS  - 6
M2  - 777
PY  - 1987
SN  - 0340-7594
SP  - 777-783
T2  - Journal of Comparative Physiology, A: Sensory Neural and Behavioral Physiology
TI  - Dynamic properties of two control systems underlying visually guided turning in house-flies
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-17741051
Y2  - 2024-11-22T04:45:37
ER  -