She started a national wide program, involving eight Dutch universities to study the effects of clock disturbance on human health and biodiversity.

[2] Meijer attended Leiden University in the Netherlands, where she obtained her master’s degree (cum laude) in the Department of Biology, Physics, and Medicine.

[4] Meijer continued building on Groos’ foundational work, allowing for translational research, and expanded electrophysiological techniques to in-vivo recordings.

[3] Meijer has advanced her research on circadian rhythms and chronobiology as a full Professor and Chair of the Neurophysiology Group at the Leiden University Medical Center in the Netherlands.

This led to a series of both laboratory and field studies,[5][27][28] (28 nominated for the Igg Nobel Prize) as well as a nationwide program to reduce light emission at night to preserve biodiversity.