A comparison of event-related potentials of humans and rats elicited by a serial feature-positive discrimination task |
| |
Authors: | A Sambeth JHR Maes |
| |
Institution: | a Nijmegen Institute for Cognition and Information/Department of Biological Psychology, Radboud University Nijmegen, The Netherlands b Cognitive Brain Research Unit, Department of Psychology, University of Helsinki, Finland |
| |
Abstract: | The purpose of this experiment was to compare components of the human and rat auditory event-related potential (ERP) in a serial feature-positive discrimination task. Subjects learned to respond to an auditory target stimulus when it followed a visual feature (X → A+), but to not respond when it was presented alone (A−). Upon solving the task, the N2 component, which has been suggested to reflect the activation of inhibitory processes, was temporarily more negative in response to the target on A− than on X → A+ trials in both species. However, whereas a P3 component was present in the human participants, this component was absent in the rats. In both species, the amplitude of several ERP components, including the N2, decreased in the course of training. These results are discussed in the framework of contemporary models of associative learning. |
| |
Keywords: | Auditory event-related potential Discrimination task Human N2 Occasion setting P3 Rat |
本文献已被 ScienceDirect 等数据库收录! |
|