Psychology & Psychiatry

Study provides insights into depression via ophthalmology

Scientists from the Max Planck Institute of Psychiatry measured the pupillary reaction of participants while they were solving a task. In healthy participants, the pupils dilated during the task in anticipation of a reward, ...

Psychology & Psychiatry

Journey into the dilemmas of the brain

When you go to a restaurant, do you always order the same thing or do you like to try something new? If you order your favorite dish, you're guaranteed a delicious meal. If you order something you haven't tried before, you ...

Psychology & Psychiatry

Reducing anxiety and stress with pupil feedback

Our pupils are a mirror of our state of arousal: they dilate when we are tense, stressed or even panicky, and constrict when we calm down. Key to this is an area of the brain measuring about 15 millimeters: a nucleus in the ...

Neuroscience

Neurotransmitter orexin influences pupil size, research shows

The way the brain regulates pupil size is different from previously thought: fundamentally responsible is the neurotransmitter orexin, as researchers at ETH Zurich have now shown. This discovery could well alter our understanding ...

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