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A Methodology for Capturing Joint Visual Attention Using Mobile Eye-Trackers
12:39

A Methodology for Capturing Joint Visual Attention Using Mobile Eye-Trackers

Published on: January 18, 2020

Grasp cueing and joint attention.

Nadja Tschentscher1, Martin H Fischer

  • 1School of Psychology, University of Dundee, Dundee, Scotland, UK.

Experimental Brain Research
|August 21, 2008
PubMed
Summary
This summary is machine-generated.

Hand posture cues influence joint attention. Direction cues help briefly, while aperture cues are only effective when combined with direction, especially for power grips, showing sensitivity to cue timing and content.

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A Within-subjects Experimental Protocol to Assess the Effects of Social Input on Infant EEG
08:20

A Within-subjects Experimental Protocol to Assess the Effects of Social Input on Infant EEG

Published on: May 3, 2017

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human-Computer Interaction

Background:

  • Joint attention, the shared understanding of an object or event, is crucial for social interaction.
  • Hand postures can act as contextual cues, potentially influencing attentional processes.
  • Understanding how different types of cues are integrated is key to understanding attentional mechanisms.

Purpose of the Study:

  • To investigate the impact of distinct hand posture cues (direction and aperture) on joint attention.
  • To determine how the timing and combination of these cues affect target detection.
  • To explore whether specific grip types (e.g., power grips) modulate cue effectiveness.

Main Methods:

  • Participants performed a target detection task.
  • Visual targets appeared after centrally presented hand postures, with varying delays.
  • Hand postures cued attention using either direction or aperture (hand size relative to object size) congruency.
  • Performance was measured by reaction times and accuracy.

Main Results:

  • Directional cues alone improved target detection at short delays.
  • Aperture cues alone were ineffective in guiding attention.
  • Combined directional and aperture cues led to sustained attention effects, particularly for power grips, even without directional congruency.
  • These effects highlight the parallel processing of different cue parameters.

Conclusions:

  • Joint attention mechanisms are highly sensitive to the temporal dynamics and specific content of contextual cues.
  • The integration of multiple cue types, especially aperture and direction, can enhance attentional guidance.
  • Grip type plays a significant role in modulating the effectiveness of hand posture cues in joint attention.