O. G. Dely szerk.: Vertebrata Hungarica 21. (Budapest, 1982)

Adler, Kr.: Sensory aspects of Amphibian navigation and compass orientation 7-18. o.

TRAINING TANK [Dressurzisterne] TEST PROCEDURE [Prüfverfahren] Fig. 3. Training and testing procedures for indoor tests under linearly-polarized light. (A) Polarizing light source, cut-away view from side: a, 25-watt tungsten bulb; b, frosted glass; c, HN-38 polarizing filter inserted between frosted glass and opaque shield in which a circular opening was cut (16 cm diameter). (B) Training tank, showing relative positions of water, shoreline, and polarizing light source. The transmission axis (e-vector) of the polarizing filter is represented by parallel lines. Thus, here, animals were trained to move perpendicular to the e-vector when displaced daily to the water-filled end and permitted to move to shore beneath the light. (C) Test procedure, showing polarized light source but with e-vector shifted 90° to its axis during training. Note that salamanders move in same direction, relative to polarization axis. Adapted from TAYLOR & ADLER (1973)