About The Study: In this systematic review and dose-response meta-analysis, a daily 1-hour increment in digital screen time was associated with 21% higher odds of myopia (nearsightedness) and the dose-response pattern exhibited a sigmoidal shape, indicating a potential safety threshold of less than 1 hour per day of exposure, with an increase in odds up to 4 hours. These findings can offer guidance to clinicians and researchers regarding myopia risk.

The combination of prescribed central nervous system stimulants, such as drugs that relieve ADHD symptoms, with prescribed opioid medications is associated with a pattern of escalating opioid intake, a new study has found.

Researchers at University of Tsukuba used visual threat manipulation in the virtual reality environment and thermal stimulation to investigate how the brain perceives pain. They found that the brain perceives pain more strongly when the perceived pain is out of alignment with reality. In particular, pain was amplified when unexpected events occurred.