Attention and conditioned suppression

Rats’ location during conditioned suppression training

Familiarity-Based Stimulus Generalization of Conditioned Suppression

We report that stimulus novelty/familiarity is able to modulate stimulus generalization and discuss the theoretical implications of novelty/familiarity coding. Rats in Skinner boxes received clicker → shock pairings before generalization testing to a tone. Before clicker training, different groups of rats received preexposure treatments designed to systematically modulate the clicker and the to...

Stimulus modality effects on transformations of conditioned enhancement and conditioned suppression in rats.

Unconditioned and conditioned effects of house-light offset and acoustic white noise on barpressing behavior maintained by intermittent food reinforcement were tested in male hooded rats. Presentations of these stimuli prior to their acquiring signal value initially tended to depress and then to enhance barpressing rate, but generally the rate of the on-going barpressing was lower during the li...

Transfer of conditioned suppression and conditioned acceleration from instrumental to consummatory baselines

Following training on a variable-interval food reinforcement schedule, rats were exposed to Pavlovian procedures which produced reliable conditioned suppression and conditioned acceleration of the leverpressing (instrumental) baseline. When free food was simultaneously made available in the test cage, all subjects spent the majority of each session "freeloading," that is, eating food from a dis...

Conditioned enhancement and suppression in the developing auditory midbrain.

Neural responses in the adult central auditory system to binaural stimuli can be altered by preceding acoustic events, including auditory motion. To determine whether the juvenile auditory system also exhibits this feature, we have examined interaural level difference (ILD) processing in the developing gerbil. A long binaural stimulus was followed without interruption by modulation of the level...