PSYC 2330 Lecture Notes - Lecture 6: U.S. Route 3, Contiguity, Robert A. Rescorla
21 Jan 2018
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The conditioned responses: auto(cid:374)o(cid:373)i(cid:272) (cid:894)i(cid:374)(cid:272)rease i(cid:374) heart rate; sali(cid:448)atio(cid:374); s(cid:449)eati(cid:374)g (cid:895, motivational (emotions, changes in affect, somatic (movement toward/away stimulus) ice cream example: Cr- salivating (autonomic), excitement (motivational), running toward truck (somatic) An index used to measure the reduction ( decrease under excitor (cs+) in fig. above) for food during the presentation of a cs associated with an aversive us. A= # of responses before the presentation of the cs. If no fear, a=b and sr=0. 5; if much fear, b=0 and sr=0. Laws of association: frequency of cs-us association, intensity and novelty of cs and of us, contiguity= cs-us sequence/timing. To obtain and observe strong conditioning, the cs should precede the us and remain on until the us occurs. Novelty ie. sound of bell might be different than another bell. Trace conditioning (memory trace); difficult to learn; can associate them only if the memory of the cs is still active. Simultaneous conditioning; not as strong conditioning as you might think.
