Inhibition of fear-potentiated startle can be detected after the offset of a feature trained in a serial feature-negative discrimination

Journal of Experimental Psychology. Animal Behavior Processes
William A Falls, M Davis

Abstract

Using the fear-potentiated startle paradigm in rats, 4 experiments examined whether the inhibitory effect of a feature is evident after its offset following serial feature-negative discrimination training (A+ and X-->A-). When startle probes were presented shortly after the offset of X on X-->A test trials, the inhibitory properties of X were observed immediately after its offset. Furthermore, trace reinforcement of X (X-->+), but not delay reinforcement (X+), disrupted the ability of X to inhibit fear-potentiated startle on X-->A trials. Trace conditioning to X was also retarded after A+ and X-->A- training. These results suggest that the inhibitory properties of the serially trained feature are present after its offset and raise the possibility that either temporal information regarding nonreinforcement or poststimulus attributes of X acquire inhibitory properties.

Citations

Jul 7, 1999·Neuroscience and Biobehavioral Reviews·M Fendt, M S Fanselow
Aug 27, 1999·Progress in Neurobiology·M Koch
Apr 1, 2004·Learning & Memory·Michael A Burman, Jonathan C Gewirtz
Mar 16, 2002·Behavioral Neuroscience·Daniel A Nicholson, John H Freeman
Jul 5, 2005·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·Stephan Röskam, Michael Koch
Jun 15, 2005·Biological Psychiatry·Tanja JovanovicErica J Duncan
May 28, 2014·Behavioural Brain Research·Howard C Cromwell, Rachel M Atchley
Jul 17, 2004·Neuropsychopharmacology : Official Publication of the American College of Neuropsychopharmacology·Sheena A JosselynMichael Davis
Apr 23, 2008·Current Protocols in Neuroscience·William A Falls

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