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Related Experiment Videos

Shifting baselines in attention research.

J Driver1, C Frith

  • 1Institute of Cognitive Neuroscience, 17 Queen Square, London WC1N 3AR, UK. j.driver@ucl.ac.uk

Nature Reviews. Neuroscience
|March 17, 2001
PubMed
Summary
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Attention enhances sensory processing by modulating brain activity before a stimulus appears. These preparatory brain changes offer new insights into the neural basis of perception and awareness.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Sensory Processing

Background:

  • Psychophysical and physiological studies demonstrate attention's role in enhancing sensory processing.
  • Functional imaging reveals attention modulates sensory brain areas prior to stimulus onset.
  • This modulation occurs during preparation for attending to anticipated stimuli.

Purpose of the Study:

  • Investigate preparatory 'baseline shifts' in brain activity.
  • Explore how attention modulates sensory areas before stimulus presentation.
  • Gain insights into the neural basis of perceptual awareness.

Main Methods:

  • Functional neuroimaging techniques (e.g., fMRI, EEG).
  • Psychophysical tasks measuring sensory perception.

Related Experiment Videos

  • Analysis of brain activity during anticipatory attention periods.

    • Main Results:

    • Attention modulates activity in sensory brain regions before stimulus onset.
    • These preparatory 'baseline shifts' are observable.
    • Evidence suggests a link between preparatory activity and subsequent perception.

    Conclusions:

    • Preparatory attention significantly influences sensory processing.
    • Baseline shifts in neural activity are a key mechanism.
    • Further research can illuminate the neural underpinnings of conscious awareness.