220
0. LOWENSTEIN
Fig. 6. Continuous record of the response from two end organs of the utriculus of
the ray, Raja clauata, to a full-circle lateral tilt. Time marker at top of record 24/sec.
Rotation signal at the bottom: 1 gap/3’. Constant speed of tilting approximately
10°/sec. The maximum discharge frequency lies near the side-up and the minimum
near the side-down position. From Lowenstein and Roberts (1949).
be dispensable from the point of view of equilibrium control. The lagena,
on the other hand, shows a distinctly different mode of reaction, responding to both lateral and fore-and-aft tilting, but showing a sharp maximum
of the impulse discharge rate in or near the “normal” position. The lagena
may therefore be considered to signal by a steep increase in activity the
return of the head to the normal spatial position. The term “into-level
0. LOWENSTEIN
Fig. 6. Continuous record of the response from two end organs of the utriculus of
the ray, Raja clauata, to a full-circle lateral tilt. Time marker at top of record 24/sec.
Rotation signal at the bottom: 1 gap/3’. Constant speed of tilting approximately
10°/sec. The maximum discharge frequency lies near the side-up and the minimum
near the side-down position. From Lowenstein and Roberts (1949).
be dispensable from the point of view of equilibrium control. The lagena,
on the other hand, shows a distinctly different mode of reaction, responding to both lateral and fore-and-aft tilting, but showing a sharp maximum
of the impulse discharge rate in or near the “normal” position. The lagena
may therefore be considered to signal by a steep increase in activity the
return of the head to the normal spatial position. The term “into-level