Sensory Systems | Cognitive Neuroscience
A load-specific influence of stimulus category on short-term memory for object and position
Raju Sapkota*, Shahina Pardhan, Ian van der Linde
*Corresponding author: Raju Sapkota
Vision & Eye Research Unit (VERU), Anglia Ruskin University, Cambridge, UK
F1000Posters 2012, 3: 758 (poster) [English]
Poster [883.68 KB]
Vision Sciences Society Annual Meeting 2012, 11 - 16 May 2012, 26.305
Visual short-term memory (VSTM), a transient, capacity-limited memory, is known to be influenced by information about stimulus category (1). Whether such influence is observed only when the memory load is high, or is it also observed for low memory load, is not clear. In this study we examined the influence of stimulus category on VSTM for object appearance and spatial location at both high and low memory loads, in order to identify if VSTM shows a propensity to recruit non-visual cues when stretched by task demands.
Conceptual information is exploited for both object and location memory at high memory load, but, at low memory load, it is exploited only for object memory.
VSTM shows a propensity to recruit additional (non-visual) information only when it is stretched by task demands, either due to increased memory load, or decreased availability of retrieval cues.
We intend to apply the findings of this research in patients with dementia, such as those with Alzheimer’s disease.
No relevant competing interests disclosed.
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