Multiomics meets
sensory biology

Bright morning light with full spectrum activates the circadian pacemaker, boosting cortisol in the morning and melatonin in the evening. Warm, dimmed evening light signals: the day is over. The modern world inverts this pattern — too little morning light, too much screen light at night.

Birdsong signals to the nervous system: it is safe. Chronic noise, on the other hand, keeps the sympathetic nervous system activated. The contrast — silence after sound — is biologically more effective than permanent silence. The art is the alternation.

Scents reach the limbic system directly via olfactory pathways — bypassing the cortex entirely. Phytoncides from cypress measurably increase natural killer cell activity. Natural scents carry information: season, safety, proximity.

Conscious touch — a hand on a shoulder for thirty seconds — activates the oxytocin system and the ventral vagus. The nervous system registers: someone is here. In the modern world, touch has almost completely disappeared.

Temperature fluctuations train the body's protective systems. Cold activates cold shock proteins, heat triggers heat shock proteins. In the thermoneutral modern world at a constant 21°C, this training stimulus is entirely absent. The body forgets how to adapt.