Auditory acuity suppression

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Auditory acuity suppression is the experience of sound becoming perceived as more distant, quiet, and muffled than they actually are. This effect can significantly decrease both the volume of a noise, as well as its perceived quality. It is usually described as making it difficult to comprehend or fully pay attention to music and other sounds.

Auditory acuity suppression is often accompanied by other coinciding effects such as auditory distortions and auditory hallucinations. It is most commonly induced under the influence of moderate dosages of dissociative compounds, such as ketamine, PCP, and DXM. However, it can also occur less commonly under the influence of GABAergic depressants and antipsychotics such as alcohol and quetiapine.


The sound clip above contains unedited audio followed by an edited audio suppression replication for comparison.

Psychoactive substances

Compounds within our psychoactive substance index which may cause this effect include:

Experience reports

Anecdotal reports which describe this effect within our experience index include:

See also

External links