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Alpha-band functional connectivity during cued versus implicit modality-specific anticipatory attention: EEG-source

I V Talalay1, A V Kurgansky1, R I Machinskaya1

  • 1Institute of Developmental Physiology, Laboratory of Neurophysiology of Cognitive Processes, Moscow, Russia.

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Voluntary and involuntary anticipatory attention involve distinct brain network activity. Cued attention enhances frontoparietal connectivity, while implicit anticipation strengthens sensorimotor-specific links.

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Area of Science:

  • Cognitive Neuroscience
  • Neuroimaging
  • Human Brain Function

Background:

  • Anticipation of future events is crucial for goal-directed behavior.
  • Anticipatory attention can be voluntary (explicit) or involuntary (implicit).
  • The neural underpinnings of these distinct attention types require further elucidation.

Purpose of the Study:

  • To investigate the differences in cortical functional organization between voluntary and involuntary anticipatory attention.
  • To determine if distinct neural networks support explicit versus implicit anticipation.
  • To explore modality-specific effects on anticipatory attention networks.

Main Methods:

  • Experimental model with three sessions: cued attention, implicit learning, and baseline.
  • Participants discriminated temporal order of stimuli in visual or auditory modalities.
  • Prestimulus functional connectivity assessed using alpha-band coherence in source-localized regions of interest.

Main Results:

  • Functional connectivity within the frontoparietal control system increased during cued (explicit) attention.
  • No significant increase in frontoparietal connectivity was observed during implicit anticipation.
  • Implicit anticipation showed strengthened functional links between intraparietal, ventral premotor, and presupplementary motor areas.
  • Both explicit and implicit anticipation relied on modality-specific cortical connections.

Conclusions:

  • Voluntary and involuntary anticipatory attention are supported by distinct patterns of cortical functional organization.
  • Explicit anticipation engages the frontoparietal control network, whereas implicit anticipation involves sensorimotor areas.
  • Anticipatory attention mechanisms are modality-specific, highlighting specialized neural processing.