tACS phase significantly modulates click detection in normal-hearing listeners

Evidence

Performance was above baseline in the 30 and 150° conditions, whereas it was below baseline in the 210, 270, and 330° conditions. Furthermore, performance was similar at 30 and 150°, and at 210 and 330° respectively, i.e., it was approximately symmetric with respect to the presumed best phase (90°). Although on average the best and worst performances were not associated with exactly opposite phases, possibly due to the contribution of higher harmonics, these observations match well the characteristics of the hypothesized 4-Hz cycle. — Dijk, Pim van, Physiology, Psychoacoustics and…, 4798 (#expands, via linked claim)

Categorization

• corroborated: 3 independent passages support this claim
• XREF: connects to: tACS boosts loudness of click trains temporally coherent with entrained oscillations; Transcranial alternating current phase modulates auditory click detection at the stimulation frequency — Dijk, Pim van, Physiology, Psychoacoustics and…, 4798; Auditory detection of near-threshold sounds depends on the phase of ongoing brain oscillations. (+2 more)

Related

• tACS boosts loudness of click trains temporally coherent with entrained oscillations (similarity 0.97)
• Transcranial alternating current phase modulates auditory click detection at the stimulation frequency (similarity 0.95)
• The polarity half-cycle of tACS stimulation measurably shifts click detection performance. (similarity 0.90)
• tACS phase benefits to hearing are real but statistically modest (similarity 0.89)
• Phase-coherent brain stimulation may boost perceived loudness of matched click trains (similarity 0.88)
• tACS stimulation phase changes detection but not overall performance versus sham. (similarity 0.85)
• tACS phase polarity alters hearing detection relative to opposite polarity but not sham baseline (similarity 0.85)
• Auditory detection of near-threshold sounds depends on the phase of ongoing brain oscillations. (similarity 0.84)
• Stimulus-aligned brain oscillations can enhance perceived loudness of auditory input (similarity 0.84)
• Click detectability depends on which half of a 4-Hz stimulation cycle it falls in (similarity 0.83)
• Phase-locked tACS yields only small, often non-significant perceptual gains (similarity 0.83)
• Entrained cortical oscillations modulate perception via phase alignment (similarity 0.83)
• Phase timing between acoustic and electric stimulation was the core experimental variable (similarity 0.82)
• Perceptual gains from tACS entrainment are small and often statistically weak (similarity 0.82)
• Phase-induced hearing changes cycle predominantly at the tACS stimulation frequency (similarity 0.81)

Broader Connections

• Transcranial alternating current phase modulates auditory click detection at the stimulation frequency #expands (0.98) — Dijk, Pim van, Physiology, Psychoacoustics and…, 4798
• tACS boosts loudness of click trains temporally coherent with entrained oscillations #corroborates (0.95)
• Auditory detection of near-threshold sounds depends on the phase of ongoing brain oscillations. #corroborates (0.92)
• Detection of tone pips varies with tACS phase lag #exemplifies (0.85)
• tACS might bypass a damaged auditory periphery to deliver envelope information #expands (0.80)