ERP indicators of learning in adults

Developmental Neuropsychology
Alexandra P F KeyEva D Ratajczak

Abstract

This study investigated learning-related changes in the brain activity of young adults. A group of 29 undergraduate students (18-24 years) participated in a learning study that included a pretest, a training session, and a posttest. Each trial involved presentation of a complex visual stimulus and its spoken "name." Auditory event-related potentials (ERPs) were recorded in response to matching and mismatching names. In the pretest, the participants guessed whether the names were matching the figures. During training they learned the names of a set of simple elements making up the complex figures and were required to master a simple rule for combining the visual and auditory stimuli. The posttest included presentation of the combinations learned during training as well as novel pairings of the same elements. Following training the number of correct responses for learned items doubled and the amplitudes of the auditory ERPs to learned and rule transfer stimuli were more positive than brain waves to the not learned or novel items over most of the analysis window. The ERPs further differentiated between a familiarity response (late positive shift) and learning-specific changes (N2-P3 range). Overall, the findings suggest that ERPs ...Continue Reading

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Mar 7, 2006·Developmental Neuropsychology·C-Y Peter ChiuScott Dunn
Apr 24, 2007·Environmental Health Perspectives·Alexandra P F KeyVictoria J Molfese
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Jul 10, 2008·Suicide & Life-threatening Behavior·Charles Cardinal

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