Neuroscience

Like social media feeds, our brains take a little while to update

Like our social media feeds, our brains are constantly uploading rich, visual stimuli. But instead of seeing the latest image in real time, we actually see earlier versions because our brain's refresh time is about 15 seconds, ...

Psychology & Psychiatry

Sleep deprivation increases serotonin 2a receptor response in brain

The serotonin 2A (5-HT2A) receptor is widely distributed in the brain and plays a critical role in perception, cognition and psychosis. It is also responsible for the psychedelic effects of drugs, such as psilocybin (hallucinogenic ...

Psychology & Psychiatry

Coffee time: Caffeine improves reaction to moving targets

In the first study of its kind to explore caffeine's effects on dynamic visual skills, researchers concluded that caffeine increases alertness and detection accuracy for moving targets. Caffeine also improved participants' ...

Neuroscience

Neurons in visual cortex of the brain 'drift' over time

New research from Washington University in St. Louis reveals that neurons in the visual cortex—the part of the brain that processes visual stimuli—change their responses to the same stimulus over time.

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