Environmental noise can have non-auditory effects on health and cognitive functioning.

This page isolates one claim from the wider argument of The Human OS Manual.

The classification describes the evidence supporting this claim, not the Human OS framework as a whole.

Stansfeld and Matheson review human evidence linking environmental noise with outcomes beyond hearing damage, including annoyance, sleep disturbance, interference with complex task performance, stress-related physiological responses, and some cardiovascular and cognitive effects.

This review does not establish that every ordinary sensory input produces the same effects, that all noise exposure is harmful at any dose, or that noise alone supports the chapter’s broader claim about stacked environmental exposure.

The book uses noise as one concrete example of environmental input. The broader Input System claim that many signals arrive before conscious interpretation remains authorial synthesis.

Supported by appropriate human studies, major reviews, trials, cohort research, or converging evidence. The strength of the category does not remove population, dose, timing, or context limitations.

Sources are listed according to the role they play in this claim. One source may provide direct support, another may explain a mechanism, establish a limitation, or prevent an interpretation from becoming broader than the evidence allows.

The printed book preserves the claim inside the argument that gives it meaning. These references connect the current digital record to the first-edition evidence trail.

This claim connects to the following parts of the Human OS architecture. The module labels locate the claim inside the framework; they do not imply that the research source validates the architecture itself.