TY - JOUR
T1 - The influence of associability changes in negative patterning and other discriminations
AU - Holland, Peter C.
AU - Thornton, Jennifer A.
AU - Ciali, Lindsey
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2000/10
Y1 - 2000/10
N2 - Normal rats showed faster learning of a serial negative patterning (NP) discrimination (X+, A+, X→A-) than of a comparable feature negative (FN) discrimination (A+, X→A-). This advantage was absent in rats with lesions of the amygdala central nucleus. Earlier data indicated that this brain lesion interferes with surprise-induced increases in attention specified by the Pearce-Hall model (J. M. Pearce & G. Hall, 1980). In the NP task, but not the FN task, omission of the reinforcer after X on X→A- trials was surprising. A variation of the NP task (NPX), in which X was reinforced on both X+ and X→A-trials, was learned more rapidly than the NP task. Lesioned rats were unimpaired in learning the NPX task. Evaluation of the lesion effects and the results of posttraining transfer tests suggested that the NP advantage involved attentional processes, whereas the NPX advantage was based on the acquisition of inhibitory control by aspects of excitation conditioned to X.
AB - Normal rats showed faster learning of a serial negative patterning (NP) discrimination (X+, A+, X→A-) than of a comparable feature negative (FN) discrimination (A+, X→A-). This advantage was absent in rats with lesions of the amygdala central nucleus. Earlier data indicated that this brain lesion interferes with surprise-induced increases in attention specified by the Pearce-Hall model (J. M. Pearce & G. Hall, 1980). In the NP task, but not the FN task, omission of the reinforcer after X on X→A- trials was surprising. A variation of the NP task (NPX), in which X was reinforced on both X+ and X→A-trials, was learned more rapidly than the NP task. Lesioned rats were unimpaired in learning the NPX task. Evaluation of the lesion effects and the results of posttraining transfer tests suggested that the NP advantage involved attentional processes, whereas the NPX advantage was based on the acquisition of inhibitory control by aspects of excitation conditioned to X.
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U2 - 10.1037/0097-7403.26.4.462
DO - 10.1037/0097-7403.26.4.462
M3 - Article
C2 - 11056886
AN - SCOPUS:0034304218
SN - 0097-7403
VL - 26
SP - 462
EP - 476
JO - Journal of Experimental Psychology: Animal Behavior Processes
JF - Journal of Experimental Psychology: Animal Behavior Processes
IS - 4
ER -