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Related Experiment Video

Updated: May 24, 2026

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
09:37

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Published on: July 5, 2015

State-dependent attention modulation of human primary visual cortex: a high density ERP study.

Valentina Rossi1, Gilles Pourtois

  • 1Department of Experimental Clinical and Health Psychology, Ghent University, Ghent, Belgium.Valentina.Rossi@UGent.be

Neuroimage
|February 25, 2012
PubMed
Summary

Attention

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Affective Science

Background:

  • Sensory processing in the primary visual cortex (V1) is modulated by attention.
  • The influence of affective state on this attentional modulation remains unclear.

Purpose of the Study:

  • To investigate whether early sensory filtering in V1 is influenced by a participant's current affective state, specifically state anxiety.
  • To determine if emotional state interacts with perceptual load to modulate V1 processing.

Main Methods:

  • Participants performed a demanding visual task with parametrically manipulated perceptual load.
  • Visual evoked potentials (VEPs) were recorded in response to peripheral distractors.
  • State anxiety levels were manipulated independently of perceptual load, and confirmed via psychophysiological measures and self-reports.

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Related Experiment Videos

Last Updated: May 24, 2026

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
09:37

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Published on: July 5, 2015

Intracortical Inhibition Within the Primary Motor Cortex Can Be Modulated by Changing the Focus of Attention
09:48

Intracortical Inhibition Within the Primary Motor Cortex Can Be Modulated by Changing the Focus of Attention

Published on: September 11, 2017

Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention
05:36

Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention

Published on: November 16, 2017

Main Results:

  • In control conditions, VEP C1 component amplitude (reflecting V1 processing) varied with perceptual load, being larger with decreased load.
  • Increased state anxiety disrupted this modulation, leading to decreased C1 amplitude even with low task load.
  • This indicates that early bottom-up processing in V1 is sensitive to both attentional resources and internal affective state.

Conclusions:

  • Early sensory processing in V1 is not solely determined by attentional demands but is significantly influenced by the participant's current emotional state.
  • State anxiety can disrupt the normal attentional filtering mechanisms in early visual cortex.
  • These findings highlight the interplay between affect and attention in shaping sensory perception.