Claude Gronfier

This study examines daily rhythmicity and stability of hunger, satiety, and physiological markers over five days in healthy males, finding individual variability and correlations with heart rate and glucose levels.

This study shows that light-induced sleep in mice requires histamine neurotransmission, as demonstrated by reduced sleep responses in HDC knockout and chemogenetically silenced mice.

This study shows that light-induced discomfort glare has a circadian rhythm with peak sensitivity at night and minimal in the afternoon, driven by ipRGCs and cones, with a phase lag between photoreceptor sensitivity and discomfort.

This study shows that light suppresses melatonin differently in young and older adults, with young adults relying solely on melanopsin and older adults involving L-cones as well.

The paper shows that human pain sensitivity follows a circadian rhythm, primarily driven by the endogenous circadian system rather than sleep.