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Related Experiment Video

Updated: Jan 24, 2026

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
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Selective spatial attention involves two alpha-band components associated with distinct spatiotemporal and functional

Jianrong Jia1, Fang Fang1, Huan Luo2

  • 1School of Psychological and Cognitive Sciences and Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing, China; IDG/McGovern Institute for Brain Research, Peking University, Beijing, China; Key Laboratory of Machine Perception (Ministry of Education), Peking University, Beijing, China; Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.

Neuroimage
|June 3, 2019
PubMed
Summary

Selective attention involves two distinct alpha-band components in the brain. One component inhibits unattended stimuli, while another processes attended stimuli, coordinating neural activity for efficient resource allocation.

Keywords:
Alpha-bandEEGSelective attentionSpatial attentionTRF

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Area of Science:

  • Neuroscience
  • Cognitive Science

Background:

  • Attention dynamically allocates neural resources across visual objects.
  • Limited neural evidence exists for attention's temporal organization, especially in sensory areas.

Purpose of the Study:

  • To investigate the spatiotemporal characteristics of neural impulse responses during covert selective attention.
  • To examine the role of alpha-band oscillations in attention using electroencephalography (EEG).

Main Methods:

  • Utilized EEG recordings and the temporal response function (TRF) approach.
  • Analyzed neuronal impulse responses to attended and unattended stimuli.

Main Results:

  • Identified two distinct alpha-band components: one in the parietal area and one in the occipital area.
  • The parietal component showed enhanced activity for unattended stimuli (inhibitory), while the occipital component activated earlier for attended stimuli.
  • Parietal activity influenced occipital activity via alpha-band rhythms, with parietal activity correlating with behavioral performance.

Conclusions:

  • Spatial attention is implemented by hierarchically organized alpha-band components with distinct spatiotemporal functions.
  • The parietal and occipital alpha-band components play complementary roles in selective attention coordination.