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Related Experiment Video

Updated: Jan 21, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
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Sub-threshold cuing: Saccadic responses to low-contrast, peripheral, transient visual landmark cues.

Nathan Ryckman1, Martina Bandzo1, Yichen Qian1

  • 1Centre for Brain Research and School of Psychology, University of Auckland, New Zealand.

Consciousness and Cognition
|July 21, 2019
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Summary

Peripheral landmark cues influence eye movements, revealing differences in dorsal stream visual processing between individuals with low and high contrast thresholds. This suggests landmark cueing can measure visual functioning and awareness.

Keywords:
AttentionConsciousnessDorsal visual streamLandmark cuingVisionVisual orienting

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Area of Science:

  • Neuroscience
  • Visual Perception
  • Cognitive Psychology

Background:

  • The dorsal visual stream is crucial for processing spatial information and guiding actions.
  • Understanding how peripheral cues influence visual processing is key to comprehending visual awareness and eye movement control.

Purpose of the Study:

  • To investigate the role of peripheral landmark cues in dorsal stream visual encoding.
  • To examine how individual differences in contrast sensitivity affect responses to sub-threshold peripheral stimuli.
  • To explore landmark cueing as a tool for assessing dorsal stream function and visual awareness.

Main Methods:

  • Three experiments were conducted using peripheral landmark cues and targets, with stimulus features tailored to dorsal stream characteristics.
  • Participant groups were divided based on low and high peripheral contrast thresholds.
  • Eye movements and orienting behavior in response to consciously indiscernible and near-threshold cues were recorded.

Main Results:

  • In Experiments 1 and 2, orienting behavior differed significantly between low and high contrast threshold groups.
  • Low-threshold participants oriented towards unconsciously perceived landmark cues (Experiment 1).
  • High-threshold participants oriented towards near-threshold cues (Experiment 3), demonstrating responsiveness to brief, low-contrast peripheral information.

Conclusions:

  • Peripheral landmark cueing effectively elicits orienting responses in both low and high contrast threshold individuals under specific conditions.
  • Landmark cueing demonstrates potential as a sensitive measure for individual differences in dorsal stream processing.
  • This method may offer insights into the dynamic interplay between visual functioning and awareness.