Scientists at the Centre for Addiction and Mental Health (CAMH) have identified a potential target for the development of anti-craving medications for people with addictions to stimulants such as methamphetamine.
General
Optical Illusion experiment shows higher brain functions involved in pupil size control
(Medical Xpress) — We all know that our pupils contract when our eyes are exposed to increases in the brightness of light. The reason is to both protect the delicate inner workings of our eyes and to help provide for optimum viewing based on available light. But we also know that our pupils dilate, or become larger when we are aroused, regardless of the reason, which means that pupil size is not always just a reaction to lighting conditions. Now, new research by Bruno Laeng and Tor Endestad from the Department of Psychology at the University of Oslo, shows that our pupils also react based on what we think we see sometimes, rather than what is actually there. In their paper, published in the Proceedings of the National Academy of Sciences, the two show that pupil constriction occurs when viewing an optical illusion that at first makes us believe one image is brighter than another, when in reality, they are the same.
Alzheimer’s: French scientists focus on key target
French scientists said on Tuesday that lack of a key brain protein was linked to Alzheimer’s, a finding that threw up a tempting target for drugs to fight the disease.
Lifelong brain-stimulating habits linked to lower Alzheimer’s protein levels
A new study led by researchers at the University of California, Berkeley, provides even more reason for people to read a book or do a puzzle, and to make such activities a lifetime habit.
fMRI brain imaging illuminates magic mushrooms’ psychedelic effects
Brain scans of people under the influence of the psilocybin, the active ingredient in magic mushrooms, have given scientists the most detailed picture to date of how psychedelic drugs work. The findings of two studies being published in scientific journals this week identify areas of the brain where activity is suppressed by psilocybin and suggest that it helps people to experience memories more vividly.