Document Detail

ERP Indices of Stimulus Prediction in Letter Sequences.
MedLine Citation:
PMID:  25343262     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Given the current focus on anticipation in perception, action and cognition, including language processing, there is a need for a method to tap into predictive processing in situations in which cue and feedback stimuli are not explicitly marked as such. To this aim, event related potentials (ERPs) were obtained while participants viewed alphabetic letter sequences ("A", "B", "C", "D", "E", …), in which the letters were highly predictable, and random sequences ("S", "B", "A", "I", "F", "M", …), without feedback. Occasionally, the presentation of a letter in a sequence was delayed by 300 ms. During this delay period, an increased negativity was observed for predictive versus random sequences. In addition, the early positivity following the delay was larger for predictive compared with random sequences. These results suggest that expectation-sensitive ERP modulations can be elicited in anticipation of stimuli that are not explicit targets, rewards, feedback or instructions, and that a delay can strengthen the prediction for a particular stimulus. Applications to language processing will be discussed.
Edith Kaan; Evan Carlisle
Publication Detail:
Type:  Journal Article     Date:  2014-10-23
Journal Detail:
Title:  Brain sciences     Volume:  4     ISSN:  2076-3425     ISO Abbreviation:  Brain Sci     Publication Date:  2014  
Date Detail:
Created Date:  2014-10-25     Completed Date:  2014-10-25     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101598646     Medline TA:  Brain Sci     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  509-31     Citation Subset:  -    
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