Brain circuit controlling compulsive behavior mapped
Peer-Reviewed Publication
Updates every hour. Last Updated: 22-Nov-2025 05:11 ET (22-Nov-2025 10:11 GMT/UTC)
Researchers at Karolinska Institutet in Sweden have identified a brain circuit that can drive repetitive and compulsive behaviours in mice, even when natural rewards such as food or social contact are available. The study has been published in the journal Science Advances and may contribute to increased knowledge about obsessive-compulsive disorder and addiction.
In the current selection round, the German Research Foundation (DFG) has granted funding for two new Collaborative Research Centres at the University of Konstanz. Over the next four years, the research teams will be working intensively on trigger signals in biological cells as well as on "silence" and "noise" in human speech.
After surpassing the 600-scholarship milestone last year, this year the remarkable generosity of private individuals, companies, and institutions enabled Goethe University to set a new participant record. A total of 280 private individuals, 45 companies, and 52 nonprofit organizations donated a €1,116,000 to Goethe University in 2025, which according to the matching principle was doubled by the Federal Ministry of Research, Technology and Space (BMFTR). This translates into a total of €2,232,000 raised for scholarship recipients.
Combining genetic risk with cardiovascular disease risk factors — such as high LDL cholesterol, obesity, and hypertension — may predict who is more likely to develop dementia, according to a new study led by UC San Francisco.
Excessive screen use among school-aged children has been linked to sleep disturbances and behavioral problems, but its effects on brain development have remained unclear. Now, researchers from Japan have examined data from over 11,000 children to explore the relationship between screen time, attention-deficit/hyperactivity disorder (ADHD) symptoms, and brain structure. Their findings reveal that longer daily screen exposure is linked to increased ADHD symptoms and measurable changes in brain development.