Document Detail

Posture-Based Processing in Visual Short-Term Memory for Actions.
MedLine Citation:
PMID:  24958242     Owner:  NLM     Status:  Publisher    
Abstract Visual perception of human action involves both form and motion processing, which may rely on partially dissociable neural networks. If form and motion are dissociable during visual perception, then they may also be dissociable during their retention in visual short-term memory (VSTM). To elicit form-plus-motion and form-only processing of dance-like actions, individual action frames can be presented in the correct or incorrect order. The former appears coherent and should elicit action perception, engaging both form and motion pathways whereas the latter appears incoherent and should elicit posture perception, engaging form pathways alone. It was hypothesised that, if form and motion are dissociable in VSTM, then recognition of static body posture should be best after viewing incoherent, compared to coherent, actions. However, as VSTM is capacity limited, posture-based encoding of actions may be ineffective with increased number of items or frames. Using a behavioural change detection task, recognition of a single test posture was significantly more likely after studying incoherent, compared to coherent, stimuli. However, this effect only occurred for spans of two (but not three) items and for stimuli with five (but not nine) frames. As in perception, posture and motion are dissociable in VSTM.
Staci A Vicary; Catherine J Stevens
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-6-24
Journal Detail:
Title:  Quarterly journal of experimental psychology (2006)     Volume:  -     ISSN:  1747-0226     ISO Abbreviation:  Q J Exp Psychol (Hove)     Publication Date:  2014 Jun 
Date Detail:
Created Date:  2014-6-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101259775     Medline TA:  Q J Exp Psychol (Hove)     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1-36     Citation Subset:  -    
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