. Comparative animal physiology. Physiology, Comparative; Physiology, Comparative. Fig. 194. Tracings from flash photographs of a haltereless fly, Eristalis tenax, in free flight. The interval between exposures is Vk sec. Note the instabihty in the horizontal or yawing plane. From ; The electrical recording of action potentials in the nerve innervating the haltere sense organs, under conditions of normal flight, pitching, rolling, and yawing, indicates considerable differences. Oscillations of the halteres with normal attitude result in the appearance of a burst of impulses for ea
. Comparative animal physiology. Physiology, Comparative; Physiology, Comparative. Fig. 194. Tracings from flash photographs of a haltereless fly, Eristalis tenax, in free flight. The interval between exposures is Vk sec. Note the instabihty in the horizontal or yawing plane. From ; The electrical recording of action potentials in the nerve innervating the haltere sense organs, under conditions of normal flight, pitching, rolling, and yawing, indicates considerable differences. Oscillations of the halteres with normal attitude result in the appearance of a burst of impulses for each half cycle of oscillation, presumably occurring at the maximum and min- imum of each excursion. There is a period of inactivity between each burst of impulses. During rotation in the rolling plane the nerve activity is augmented, but not to the extent that it is by movement in the yawing plane. Presumably the altered nerve discharge pattern produces reflex. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Prosser, C. Ladd (Clifford Ladd), 1907-; Bishop, David W. Philadelphia, Saunders
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