Perceptual asymmetries are preserved in short-term memory tasks

Leila Montaser-Kouhsari, Marisa Carrasco-Queijeiro

Research output: Contribution to journalArticle

Abstract

Visual performance is heterogeneous at isoeccentric locations; it is better on the horizontal than on the vertical meridian and worse at the upper than at the lower region of the vertical meridian (Carrasco, Talgar, & Cameron, 2001; Talgar & Carrasco, 2002). It is unknown whether these performance inhomogeneities are also present in spatial frequency tasks and whether asymmetries present during encoding of visual information also emerge in visual short-term memory (VSTM) tasks. Here, we investigated the similarity of the perceptual and VSTM tasks in spatial frequency discrimination (Experiments 1 and 2) and perceived spatial frequency (Experiments 3 and 4). We found that (1) performance in both simultaneous (perceptual) and delayed (VSTM) spatial frequency discrimination tasks varies as a function of location; it is better along the horizontal than along the vertical meridian; and (2) perceived spatial frequency in both tasks is higher along the horizontal than along the vertical meridian. These results suggest that perceived spatial frequency may mediate performance differences in VSTM tasks across the visual field, implying that the quality with which we encode information affects VSTM.

Original languageEnglish (US)
Pages (from-to)1782-1792
Number of pages11
JournalAttention, Perception, and Psychophysics
Volume71
Issue number8
DOIs
StatePublished - 2009

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Meridians
Short-Term Memory
asymmetry
performance
discrimination
experiment
Visual Fields
Short-term Memory
Spatial Frequency
Asymmetry
Visual Short-term Memory
present
Discrimination (Psychology)

ASJC Scopus subject areas

  • Sensory Systems
  • Experimental and Cognitive Psychology
  • Medicine(all)

Cite this

Perceptual asymmetries are preserved in short-term memory tasks. / Montaser-Kouhsari, Leila; Carrasco-Queijeiro, Marisa.

In: Attention, Perception, and Psychophysics, Vol. 71, No. 8, 2009, p. 1782-1792.

Research output: Contribution to journalArticle

Montaser-Kouhsari, Leila ; Carrasco-Queijeiro, Marisa. / Perceptual asymmetries are preserved in short-term memory tasks. In: Attention, Perception, and Psychophysics. 2009 ; Vol. 71, No. 8. pp. 1782-1792.
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