Dieldrin exposure and vigilance behavior in sheep

Effects of dieldrin on learning and retention of a visual discrimination task in sheep

“…The learning period was prolonged iy position habits. In other recent studies, sheep have also keen trained cn shuttlebox avoidance (Sussman, 1307), detour tasks (Sandler, Van Gelder, Buck, 6 Karas, 1969), and the previously mentioned vigilance task (Sandler, 1968). Thus, sheep can learn to perform in different testing situations when adequate habituation and training procedures are imple mented.…”

Auditory and visual discrimination learning in sheep prenatally and postnatally exposed to lead

“…Sandler (1968) trained sheep to bar press within 5 seconds after the presentation of a 0.1 second 5 KHz tone of 6 db in order to gain access to food. A daily oral dose of 20 mg/kg technical dieldrin produced a marked decrement in the percent of correct responses by each sheep on this vigi lance task.…”