Inner-ear blood-flow noise is adapted out because it never stops

Evidence

The model can be used for threshold in quiet and masked thresholds. At low frequencies it is assumed that the subject produces his/her own noise as a consequence of the blood supply in the inner ear and of vibrations produced by the heart and muscles. We adapt to this noise because it is always there and therefore we don’t usually hear it, particularly in our normal surroundings. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 1148

Categorization

Category: Causal Relationships

• XREF: Adaptation to constant internal noise parallels the more general perceptual adaptation to a constant input discussed in this chapter’s model framework.

Related

• Internal physiological noise from blood flow and heartbeat raises low-frequency thresholds (similarity 0.88)
• Internal bodily noise raises the hearing threshold at low frequencies (similarity 0.84)
• Resting-state connectivity analysis must filter physiological noise that inflates correlations (similarity 0.83)
• Threshold in quiet is attributed to internal physiological noise (similarity 0.82)
• Repeated noise overexposure converts temporary threshold shifts into permanent hearing loss (similarity 0.82)
• Subcortical fMRI signals are degraded by cardiac pulsatile motion effects (similarity 0.81)
• Near threshold, masked threshold depends on both masker level and threshold-in-quiet via internal noise (similarity 0.81)
• Outer and middle ear act linearly while inner-ear mechanics are nonlinear (similarity 0.80)
• Hearing adapts to focus on the audible 20-30 dB of decay (similarity 0.80)
• Intense low-frequency sound alters inner ear function even though we barely hear it (similarity 0.80)
• Uniform masking noise can substitute for threshold-in-quiet across all frequencies. (similarity 0.79)
• What appears as neural suppression may actually mix mechanical, adaptive, and refractory effects. (similarity 0.79)
• Hearing adapts to timbre modifications, driving escalating compensation until a rest break resets perception (similarity 0.79)
• Auditory threshold for broadband noise is set by the most sensitive frequency region only (similarity 0.78)
• Healthy ears exploit gaps in fluctuating maskers better than steady ones (similarity 0.78)