Health

Humans don't hibernate, but we still need more winter sleep

Whether we're night owls or morning larks, our body clocks are set by the sun. Theoretically, changing day length and light exposure over the course of the year could affect the duration and quality of our sleep. But figuring ...

Neuroscience

Using light to manipulate neuron excitability

Nearly 20 years ago, scientists developed ways to stimulate or silence neurons by shining light on them. This technique, known as optogenetics, allows researchers to discover the functions of specific neurons and how they ...

Psychology & Psychiatry

Research shows daylight has big impact on cognitive functions

Imagine you are in a laboratory room watching two African grass rats trying to navigate through a maze. One grass rat moves through the course quickly and finds its way out easily. The other struggles and cannot figure out ...

page 2 from 10