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August 27, 2024Open Access

Dissociating External and Internal Attentional Selection

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Authors

KAKabir AroraUtrecht UniversitySGSurya GayetRadboud University NijmegenJKJ. Leon Kenemans

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Implication

Experimental EEG study demonstrates sensory enhancement during external but not internal attentional selection in human observers, indicating spatial organization independent of sensory gain.

Key Points

  • External attentional selection uniquely drives sensory enhancement at attended locations, whereas internal memory retrieval does not modulate early sensory responses.
  • Across two EEG experiments, rapid invisible frequency tagging revealed sensory enhancement exclusively during external attention, with no gain during internal selection.
  • Analysis of alpha oscillations and gaze bias reveals spatial tuning during internal attentional selection, demonstrating that visual working memory uses space for storage.

Cite This Study

Arora et al. (2024) studied this question.

synapsesocial.com/papers/68e5ab8eb6db6435875452bahttps://doi.org/10.1101/2024.08.27.609883
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