Health

Marijuana use linked to epigenetic changes

Recent and long-term marijuana use is linked to changes in the human epigenome, a new Northwestern Medicine study published in Molecular Psychiatry has found.

Neuroscience

Scientists record powerful signal in the brain's white matter

The human brain is made up of two kinds of matter: the nerve cell bodies (gray matter), which process sensation, control voluntary movement, and enable speech, learning and cognition, and the axons (white matter), which connect ...

Medical research

Our muscles measure the time of day

Biological clocks throughout the body trigger the release of the hormone melatonin during sleep, induce the secretion of digestive enzymes at lunchtime or keep us awake at the busiest moments of the day. A "master clock" ...

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