Figure 6.

Retention tests after mechanosensory, antennal conditioning of PER. (A) Bees were conditioned as usual. During acquisition, the probability of PER significantly increased during the six CS-US paired presentations. (B) Retention tests were performed at 1 min, 10 min, 1 h, and 24 h after the last acquisition trial. In such tests, bees received an ipsilateral (I) and a contralateral (C) antennal stimulation (with respect to the antenna previously conditioned). In all cases, bees responded always significantly more to the ipsilateral than to the contralateral stimulation.