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Related Experiment Videos

Probabilistic versus "Pure" Volitional Orienting: a Monocular Difference.

William Saban1, Raymond M Klein2, Shai Gabay3

  • 1Department of Psychology and the Institute of Information Processing and Decision Making (IIPDM), University of Haifa, Haifa, Israel. williamsaban@gmail.com.

Attention, Perception & Psychophysics
|January 12, 2018
PubMed
Summary
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Human volitional orienting, studied via Posner's endogenous cuing task, may involve subcortical pathways. The typical task may not purely measure volitional processes due to associative learning.

Area of Science:

  • Cognitive Neuroscience
  • Human Attention Studies

Background:

  • Volitional orienting is a higher cognitive function traditionally linked to neocortical structures.
  • Posner's endogenous cuing task is the standard method for assessing volitional orienting.

Purpose of the Study:

  • To investigate the potential role of subcortical pathways in volitional orienting.
  • To compare a typical Posner cuing task with a "purer" version lacking probability manipulation.

Main Methods:

  • Utilized a sensitive behavioral method to probe monocular (subcortical) channel contributions.
  • Administered two types of endogenous orienting tasks with varying cue-target intervals and eye-of-origin conditions.

Main Results:

  • In the typical task, same-eye presentation led to earlier facilitation onset compared to different-eye presentation.
Keywords:
AttentionAttention: Neural MechanismsSpatial cognition

Related Experiment Videos

  • In the "pure" task, no difference in facilitation onset was observed between same-eye and different-eye conditions.

    • Conclusions:

    • Endogenous facilitation in the typical Posner task involves subcortical monocular regions.
    • The standard volitional orienting paradigm may be influenced by associative learning, potentially confounding pure measures of volitional control.