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🪵 The Threshold

Weak scalp currents can force brain neurons to oscillate at the applied frequency

Properties1
tagsja-picks, causal_relationships, singleton, xref, category/causal-relationships

2 min read

Weak scalp currents can force brain neurons to oscillate at the applied frequency

Evidence

Compared with periodic acoustic stimulation, tACS arguably provides the preferred entrainment stimulus as it can be applied both in silence and at selected scalp position, thus allowing to bypass the peripheral auditory system and reduce possible masking of the target sound. — Dijk, Pim van, Physiology, Psychoacoustics and…, 4768 (#corroborates, via linked claim)

Compared with periodic acoustic stimulation, tACS arguably provides the preferred entrainment stimulus as it can be applied both in silence and at selected scalp position, thus allowing to bypass the peripheral auditory system and reduce possible masking of the target sound. However, important issues remain unresolved: How reliable are auditory effects of tACS? Do they also apply to oscillations outside the alpha range? Do they also occur in more naturalistic situations where target sounds need to be tracked amidst other sounds? — Dijk, Pim van, Physiology, Psychoacoustics and…, 4769 (#corroborates, via linked claim)

Categorization

  • XREF: connects to: Electrical brain stimulation may enhance sounds temporally coherent with entrained oscillations — Dijk, Pim van, Physiology, Psychoacoustics and…, 4768; Scalp current can entrain sound processing while bypassing the peripheral ear — Dijk, Pim van, Physiology, Psychoacoustics and…, 4769; Stimulus-aligned brain oscillations can enhance perceived loudness of auditory input (+1 more)

Broader Connections

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