2023-10-09
40 Hz Light Flickering Promotes Sleep through Cortical Adenosine Signaling
2023-10-09 • Yan He, Xuzhao Zhou, Tao Xu, Zhaofa Wu, Wei Guo, Xi Xu, Yuntao Liu, Yi Zhang, Huiping Shang, Zhimo Yao, Zewen Li, Zhihui Li, Tao Feng, Shaomin Zhan...
Abstract Flickering light stimulation has emerged as a promising non-invasive neuromodulation strategy to alleviate neuropsychiatric disorders. However, the lack of a neurochemical underpinning has hampered its therapeutic development. Here, we demonstrate that light flickering triggered an immediate and sustained increase (up to 3 hours after flickering) in extracellular adenosine levels in the primary visual cortex and other brain regions, as a function of light frequency, intensity, and wavelength, with maximal…