(thank you Mike Pickle: https://www.facebook.com/groups/190982954245635/permalink/2110516852292226/)
Mysterious new brain cell found in people
“rosehip neurons,” were found in the uppermost layer of the cortex, which is home to many different types of neurons that inhibit the activity of other neurons.
the set of genes expressed in these inhibitory rosehip neurons doesn’t closely match any previously identified cell in the mouse, suggesting they have no analog in the rodent often used as a model for humans,
The locations of their points of contact on other neurons suggest they’re in a powerful position to put the brakes on other incoming, excitatory signals—by which complex circuits of neurons activate one another throughout the brain.
more on learning and the brain in this IMS blog