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 ...

Autism spectrum disorders

Saliva, pupil size differences in autism show system in overdrive

(Medical Xpress) -- University of Kansas researchers have found larger resting pupil size and lower levels of a salivary enzyme associated with the neurotransmitter norepinephrine in children with autism spectrum disorder.

Psychology & Psychiatry

Pupils mirror perception of social interaction

Humans are endowed with intrinsic social motivation to interact with others and to maintain social relationships. It has been demonstrated that pupil size may serve as a window for personal motivations, such as sex, money ...

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 ...

Psychology & Psychiatry

It's music to my eyes

When people are listening to music, their emotional reactions to the music are reflected in changes in their pupil size. Researchers from the University of Vienna and the University of Innsbruck, Austria, are the first to ...

Neuroscience

Questions answered with the pupils of your eyes (w/ Video)

Patients who are otherwise completely unable to communicate can answer yes or no questions within seconds with the help of a simple system—consisting of just a laptop and camera—that measures nothing but the size of their ...

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