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Statistical model defines ketamine anesthesia’s effects on the brain

Neuroscientists have developed a statistical framework that rigorously describes the brain state changes that patients experience under ketamine-induced anesthesia.

New model for solving novel problems uses mental map

How do we make decisions about a situation we have not encountered before? New work shows that we can solve abstract problems in the same way that we can find a novel route between two known locations — by using an internal cognitive map.

Gut and heart signals affect how we see ourselves

Research has discovered that the strength of the connection between our brain and internal organs is linked to how we feel about our appearance. The study has investigated the association between body image and the brain’s processing of internal signal…

Epilepsy brain implant does not transform patients’ sense of self or personality but offers them new insights into illness, study shows

A next-generation brain implant currently in clinical use for treating refractory epilepsy — to help prevent symptoms including seizures — does not induce changes to patients’ personalities or self-perceptions, a new study of patient experiences shows.

Many of the fastest-evolving human genes linked to evolutionary changes in brain development

More than 3,000 regions in the human genome are very different in people from in any other mammals, including our closest primate relatives. Now, a study has evidence to confirm that nearly half of these so-called human accelerated regions (HARs) have …

Beyond dopamine: New reward circuitry discovered

The key to overcoming addictions and psychiatric disorders lives deep inside the netherworld of our brains and the circuitry that causes us to feel good. Just like space, this region of the brain needs more exploration. Researchers have now pushed the …

Deficits may remain after 7-day recovery from 10 days of insufficient sleep

After 7 days of recovery from a 10-day period of deficient sleep, participants in a small study had recovered their pre-sleep deprivation reaction speed, but had not fully recovered on any other measures of function.

Family of proteins offers promise as ischemic stroke treatment, preclinical trial finds

Boosting a family of naturally occurring proteins that dampens inflammation in the body has been shown to be effective in reducing damage from an ischemic stroke, according to preclinical research.

Vision: Novel approach reverses amblyopia in animals

By temporarily suspending retinal activity in the non-amblyopic eye of animal models, neuroscientists restrengthened the visual response in the amblyopic eye, even at ages after the critical period when patch therapy fails.

Do genetics control who our friends are? It seems so with mice

Have you ever met someone you instantly liked, or at other times, someone who you knew immediately that you did not want to be friends with, although you did not know why? Now, a new study suggests that there may be a biological basis behind this insta…