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Dunbar’s number: Why we can only maintain 150 relationships

November 5th, 2019 at 12:29 pm » Comments Off

The theory of Dunbar’s number holds that we can only really maintain about 150 connections at once. But is the rule true in today’s world of social media? If you’ve ever been romantically rejected by someone who just wanted to be friends, you may have delivered a version of this line: “I’ve got enough friends […]



Mini-brains grown in a lab have human-like brain activity

September 10th, 2019 at 3:29 am » Comments Off

A new study promises new paths to research mental illness, but raises questions about whether so-called organoids could develop consciousness Alysson Muotri was dumbfounded when the pea-sized blobs of human brain cells that he was growing in the lab started emitting electrical pulses. He initially thought the electrodes he was using were malfunctioning. Muotri was […]



Cambridge scientists reverse ageing process in rat brain stem cells

September 9th, 2019 at 11:34 am » Comments Off

Aged rat brain stem cells grown on a soft surface (right) show more healthy, vigorous growth than similar aged brain stem cells grown on a stiff surface (left) New research reveals how increasing brain stiffness as we age causes brain stem cell dysfunction, and demonstrates new ways to reverse older stem cells to a younger, […]



A map of the brain could help to guess what you’re reading

September 1st, 2019 at 3:18 am » Comments Off

A 3D map of how the brain responds to words could unlock new ways to understand and treat dyslexia and speech disorders. Map-making: Researchers at UC Berkeley used functional MRI to measure nine volunteers’ brain activity (using blood flow as a proxy) as they listened to, and then read, stories from “The Moth Radio Hour,” […]



Neuroscientists decode brain speech signals into written text

August 15th, 2019 at 11:43 am » Comments Off

Study funded by Facebook aims to improve communication with paralysed patients The study recording brain signals sent to trigger organ movement is considered a breakthrough. When Stephen Hawking wanted to speak, he chose letters and words from a synthesiser screen controlled by twitches of a muscle in his cheek. But the painstaking process the cosmologist […]



are certificates more valuable than college degrees?