When the elderly insomniacs were exposed to four hours of bright artificial light near the middle of the day (ten o’clock to noon and two o’clock to four) for four weeks, their melatonin secretion rose “to levels similar to those in the young control group, ” says the report.
Kui eakatel unetutel lasti nelja nädala jooksul keskpäeva paiku (10.00 – 12.00 ja 14.00 – 16.00) viibida neli tundi ereda kunstvalguse käes, tõusis nende melatoniinisekretsioon „umbes samale tasemele kui noortest inimestest koosneval kontrollgrupil ”, öeldakse teates.