Crayfish can turn blood cells into neurons

Crayfish can turn blood cells into neurons regenerating parts of their brain

Crayfish can turn blood cells into neurons, regenerating parts of their brain. Understanding the mechanism could lead to new ways of reprogramming human cells. Humans can make new neurons, but only from specialised stem cells. Crayfish, meanwhile, can convert blood to neurons that resupply their eyestalks and smell circuits. Although it’s a long way from […]

What makes the human Brain so special

How many neurons make a human brain? For years, the answer has been (give or take) 100 billion. But neuroscientist Suzana Herculano-Houzel decided to count them herself. Her research approach involved dissolving four human brains (donated to science) into a homogeneous mixture — in her lab at the Institute of Biomedical Sciences in Rio de […]


The brain is much more active at night than during the day

Electroencephalography (EEG) has been used in many studies as a primary method for evaluating the meditating brain. Electroencephalography uses electrical leads placed all over the scalp to measure the collective electrical activity of the cerebral cortex. Specifically, EEG measures the electric fields of large groups of neurons. EEG has the benefit of excellent temporal resolution […]

Brains have a negativity bias will remember bad memories more

Brains have a negativity bias will remember bad memories more

Negativity bias is the psychological phenomenon by which humans have a greater recall of unpleasant memories compared with positive memories. Participants in a study were shown pictures with people both showing negative, positive and neutral faces. Various types of expressions were exhibited in all of them. The subjects could exceedingly easier recall the expressions of […]