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eLearning

SINAPSE experts from around Scotland have developed ten online modules designed to explain medical imaging. They are freely available and are intended for non-specialists.


Edinburgh Imaging Academy at the University of Edinburgh offers the following online programmes through a virtual learning environment:

Neuroimaging for Research MSc/Dip/Cert

Imaging MSc/Dip/Cert

PET-MR Principles & Applications Cert

Applied Medical Image Analysis Cert

Online Short Courses

Characterizing episodic memory retrieval: electrophysiological evidence for diminished familiarity following unitization

Author(s): L. K. Pilgrim, J. G. Murray, D. I. Donaldson

Abstract:
Episodic memory relies on both recollection and familiarity; why these processes are differentially engaged during retrieval remains unclear. Traditionally, recollection has been considered necessary for tasks requiring associative retrieval, whereas familiarity supports recognition of items. Recently, however, familiarity has been shown to contribute to associative recognition if stimuli are "unitized" at encoding (a single representation is created from multiple elements)-the "benefit" of unitization. Here, we ask if there is also a "cost" of unitization; are the elements of unitized representations less accessible via familiarity? We manipulated unitization during encoding and used ERPs to index familiarity and recollection at retrieval. The data revealed a selective reduction in the neural correlate of familiarity for individual words originally encoded in unitized compared with nonunitized word pairs. This finding reveals a measurable cost of unitization, suggesting that the nature of to-be-remembered stimuli is critical in determining whether familiarity contributes to episodic memory.

Full version: Available here

Click the link to go to an external website with the full version of the paper


ISBN: 1530-8898 (Electronic) 0898-929X (Linking)
Publication Year: 2012
Periodical: J Cogn Neurosci
Periodical Number: 8
Volume: 24
Pages: 1671-81
Author Address: Department of Psychology, University of Stirling, Stirling, Scotland, FK9 4LA, United Kingdom. lea.pilgrim@gmail.com