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Table 1 Experimental procedure on both study days

From: Impact of a single, short morning bright light exposure on tryptophan pathways and visuo- and sensorimotor performance: a crossover study

Time of day (a.m.)

Activity

Light exposure

06:00

Wake up (morning urine collection)

Residential light

07:00

Arrival at the study location

Workplace

07:05

Urine sampling I, blood sampling I

Workplace

07:15

VAS pre (data not shown, [26])

Workplace

07:20

Visuo- and sensorimotor performance tests I

Workplace

07:40–08:10

Light exposure

BL or OL

08:12

VAS post (data not shown, [26])

Workplace

08:15–09:00

Sustained attention test (data not shown, [26])

Workplace

09:05

Urine sampling II, blood sampling II

Workplace

09:15

Visuo- and sensorimotor performance tests II

Workplace

11:05

Urine sampling III, blood sampling III

Workplace

  1. VAS visual analogue scale, pre before light exposure, post after exposure to either bright light (BL, 5000 lux, 6500 K) or office light (OL, < 150 lux, 6500 K); workplace light exposure < 100 lux, 4000 K