Abstract
An experiment with rats was conducted in order to analyze the impact of the retrieval-extinction paradigm on the reinstatement of operant behaviors. In the first phase of the experiment, subjects were trained to press a lever for food. Then, in Phase 2, the Extinction Group received the typical extinction procedure, whereas the Retrieval Group was exposed to the retrieval-extinction paradigm (i.e., a brief extinction session, followed by a retention interval, and then a longer extinction session). Finally, all rats were tested twice. The first test was carried out immediately after the last extinction session, while the second test took place after a single session of re-exposure to the food. We found lower levels of reinstatement in the Retrieval Group.
Highlights
Follow-up comparisons conducted to explore this interaction indicated that both the Extinction Group, F(1, 14) = 52.01, p = .0001, ƞp2 = .77, CI 90% [0.54, 0.86] and the Retrieval Group, F(1, 14) = 13.00, p = .002, ƞp2 = .37, CI 90% [0.13, 0.66] performed higher levels of lever-pressing during Test 2
These analyses indicated that rats in the Retrieval Group showed lower levels of reinstatement in comparison with the Extinction Group, F(1, 14) = 9.72, p = .007, ƞp2 = .26, CI 90% [0.08, 0.61], thereby showing that the retrieval-extinction paradigm reinstatement in a free operant task
In one experiment we evaluated the impact of the retrieval-extinction paradigm on the reinstatement of operant behaviors in rats
Summary
El restablecimiento de conductas operantes es reducido por el procedimiento de reactivación durante la extinción. Se realizó un experimento con ratas para analizar el impacto del procedimiento de reactivación durante la extinción en el restablecimiento de las conductas operantes.
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