منابع مشابه
Reward magnitude and learning in a single-presentation discrimination.
The purpose of this experiment was to study the effect of amount of reward on performance in a single-presentation discrimination. Rats were reinforced for running down a gray alley to a black goalbox (S) but were not reinforced in a white goalbox (S~). Half the ,5s received a large reward, and half received a small reward. Generalizing from single-runway studies (Crespi, 1943), one would expec...
متن کاملReward Magnitude Coding in Primate Amygdala Neurons
Animals assess the values of rewards to learn and choose the best possible outcomes. We studied how single neurons in the primate amygdala coded reward magnitude, an important variable determining the value of rewards. A single, Pavlovian-conditioned visual stimulus predicted fruit juice to be delivered with one of three equiprobable volumes (P = 1/3). A population of amygdala neurons showed in...
متن کاملDelayed Reward Discounting and Alcohol Misuse: The Roles of Response Consistency and Reward Magnitude.
Delayed reward discounting (DRD) is a common index of impulsivity that refers to an individual's devaluation of rewards based on delay of receipt and has been linked to alcohol misuse and other maladaptive behaviors. The current study investigated response consistency and reward magnitude effects in two measures of DRD in a sample of 111 undergraduates who consumed an average of 10.7 drinks/wee...
متن کاملHoneybees learn the sign and magnitude of reward variations.
In this study, we asked whether honeybees learn the sign and magnitude of variations in the level of reward. We designed an experiment in which bees first had to forage on a three-flower patch offering variable reward levels, and then search for food at the site in the absence of reward and after a long foraging pause. At the time of training, we presented the bees with a decrease in reward lev...
متن کاملBeyond the reward pathway: coding reward magnitude and error in the rat subthalamic nucleus.
It was recently shown that subthalamic nucleus (STN) lesions affect motivation for food, cocaine, and alcohol, differentially, according to either the nature of the reward or the preference for it. The STN may thus code a reward according to its value. Here, we investigated how the firing of subthalamic neurons is modulated during expectation of a predicted reward between two possibilities (4 o...
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ژورنال
عنوان ژورنال: Bulletin of the Psychonomic Society
سال: 1976
ISSN: 0090-5054
DOI: 10.3758/bf03337132