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Related Experiment Video

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Attention, novelty preference and the visual paired comparison task.

Moshe Eizenman1, Jonathan Chung2, MingHan Yu3

  • 1Department of Ophthalmology and Vision Sciences, Institute of Biomaterials and Biomedical Engineering, University of Toronto, Room 420C, 164 College St, Toronto, Ontario, M5S 3G9, Canada; Department of Electrical and Computer Engineering, University of Toronto, Room 420C, 164 College St, Toronto, Ontario, M5S 3G9, Canada.

Experimental Eye Research
|November 17, 2018
PubMed
Summary

Divided attention significantly impacts novelty preference (NP) in visual paired comparison tasks, particularly at longer delays. This suggests that attention bias to novel stimuli relies on different memory systems depending on attentional load.

Keywords:
Divided attentionEye movementsFamiliarity-based recognition memoryNovelty preferenceRecollection-based recognition memoryVisual paired comparisonVisual scanning

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Behavior

Background:

  • Novelty preference (NP) is a key indicator of attention bias towards new stimuli, crucial for adaptation.
  • The visual paired comparison (VPC) task is a standard method for measuring NP by analyzing visual scanning patterns.
  • Understanding factors influencing NP, like attentional demands, is vital for cognitive research.

Purpose of the Study:

  • To investigate the impact of divided attention on novelty preference (NP) measured using the visual paired comparison (VPC) task.
  • To determine how varying delays between image presentations affect NP under conditions of divided versus undivided attention.

Main Methods:

  • Twenty-six healthy young adults participated in two conditions: divided attention (VPC task + audio task) and undivided attention (VPC task only).
  • NP was assessed by measuring the difference in relative fixation times between novel and repeated images across delays from 1.0 to 219.5 seconds.
  • Statistical analyses, including ANOVA and post-hoc t-tests, were used to compare NP across conditions and delays.

Main Results:

  • Divided attention led to significant differences in NP between short (≤12.5s) and long (≥162s) delays, unlike undivided attention.
  • Analysis of variance revealed significant main effects of attention condition and significant interaction effects between delays and attention conditions on NP.
  • Post-hoc tests confirmed significant differences in NP between divided and undivided attention conditions specifically for longer delays.

Conclusions:

  • Novelty preference is modulated by attentional load, with divided attention altering the typical response patterns observed in the VPC task.
  • The findings support the hypothesis that NP relies on recollection-based memory at longer delays and familiarity-based memory at shorter delays, particularly under divided attention.
  • This research highlights the dynamic interplay between attention, memory systems, and novelty seeking in human cognition.