Multiple Reversal Olfactory Learning in Honeybees

摘要: In multiple reversal learning, animals trained to discriminate a reinforced from non-reinforced stimulus are subjected various, successive reversals of contingencies (e.g. A+ vs. B-, A- B+, B-). This protocol is useful determine whether or not "learn learn" and solve discriminations faster (or with fewer errors) increasing experience. Here we used the olfactory conditioning proboscis extension reflex study how honeybees Apis mellifera perform in task. Our experiment contemplated four consecutive differential phases involving same odors (A+ B- B+ B+). We show that bees which weight stimuli was similar mastered reversals. Bees failed task exhibited asymmetric responses stimuli, thus being unable rapidly reverse contingencies. Efficient reversers did improve their but rather tended generalize choice both at end conditioning. As consequence, discrimination efficiency decreasedalong experimental phases. result invalidates learning-to-learn effect indicates do only respond actual combine these an average past experiences stimuli.