Abstract
A new methodology was used to train two rats on a conditional discriminationtask that used multi-modal stimuli that differed along a number of sensory dimensions (i.e., visual, tactile and olfactory). Rats were trained across two stages to move from a multi-modal sample to a multi-modal comparison for food reward (i.e., given Wood as sample. move to the Rubber comparison [A1-B1], and given Foam as sample. move to the Carpet comparison [A2-B2]). Having reached criterion in the second stage of training. rats were then exposed to blocks of trials where symmetry probe test trials (B1-A1 and B2- A2) were interspersed with reinforced and non-reinforced baseline trials. The advantages of the methodology for facilitating multi-modal conditional discrimination responding in rats is discussed.
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