Sanderson, D.J. and Cuell, S.F. and Bannerman, D.M. (2014) 'The effect of US signalling and the US–CS interval on backward conditioning in mice.', Learning and motivation., 48 . pp. 22-32.
The effect of US signalling and the US–CS interval in backward conditioning was assessed in mice. For one group of mice the presentation of food was signalled by a tone and for another group, food was unsignalled. For half of the mice, within each group, the presentation of food preceded a visual cue by 10 s. For the other half, food was presented at the start of the visual cue (0-s US–CS interval), resulting in simultaneous pairings of these events. A summation test and a subsequent retardation test were used to assess the inhibitory effects of backward conditioning in comparison to training with a non-reinforced visual cue that controlled for the possible effects of latent inhibition and conditioned inhibition caused as a consequence of differential conditioning. In the summation test unsignalled presentations of the US resulted in inhibition when the US–CS interval was 10 s, but not 0 s. Signalled presentations of the US resulted in inhibition, independent of the US–CS interval. In the retardation test, independent of US signalling, a US–CS interval of 10 s failed to result in inhibition, but an interval of 0 s resulted in greater conditioned responding to the backward CS than the control CS. A generalisation decrement account of the effect of signalling the US with a 0-s US–CS interval, which resulted in reduced responding in the summation test and faster acquisition in the retardation test, is discussed.
|Keywords:||Learning, Conditioned inhibition, Priming, Temporal contiguity, Behaviour, External inhibition.|
|Full text:||(VoR) Version of Record|
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|Publisher Web site:||https://doi.org/10.1016/j.lmot.2014.08.002|
|Publisher statement:||© 2014 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/).|
|Date accepted:||18 August 2014|
|Date deposited:||12 November 2014|
|Date of first online publication:||08 November 2014|
|Date first made open access:||No date available|
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