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Hunger may motivate us more than thirst, fear, or anxiety

A mouse study reveals that hunger may be a stronger motivating force than a number of other driving states, including fear, anxiety, and social needs.

Cocaine accumulation in fish eyes

A study using a new imaging method has revealed that, surprisingly, cocaine accumulates in the eyes of zebrafish. The findings indicate that chemicals – especially psychoactive drugs – need to be assessed quite differently with waterborne exposure …

The roots of human violence may lie in our evolutionary tree

Lethal interpersonal violence is a particular feature of primates and is likely to have been inherited by humans during the course of evolution, finds a new study published in Nature.

How the brain decides between effort and reward

In a new study, researchers investigated what parts of the brain may be involved in deciding if something is worth the effort. The team found a relevant pattern of activity in three areas of the brain, the supplementary motor area (SMA), dorsal anterio…

Depression in pregnancy increases risk of mental health problems in children

Depression in pregnancy increases the risk of behavioral and emotional problems in children, says a new review.

New imaging technique in Alzheimer’s disease opens up possibilities for new drug development

Tau PET is a new and promising imaging method for Alzheimer’s disease. A case study in Sweden now confirms that tau PET images correspond to a higher degree to actual changes in the brain. According to the researchers behind the study, this increases…

Health experts report US$246 billion cost of workplace depression across eight countries

New data shows that workplace depression is a major issue across different cultures and economies, with “wide and devastating” consequences for thousands of organisations worldwide.

Economic hardships pave the way to cognitive aging

The effect of poverty on cognitive aging is clearer than many believed. It also appears to begin earlier in life than previously thought, too.

Interruptions to rehab are common after stroke or brain injury, but many are preventable

Patients in inpatient rehabilitation after a stroke, brain injury, or spinal cord injury have significant rates of interruptions of their rehab program—often including being transferred back to the hospital for treatment of complications, reports a n…

Experimental imaging agent reveals concussion-linked brain disease in living brain

A protein tracer shows a distinctive pattern of brain protein deposition specific to chronic traumatic encephalopathy, a disease typically confirmed after death. A link between brain injury and long-term health has been gaining attention in recent years.