From One Afro to Another @afrosamurigh - Tumblr Blog

Hey Tumblr. Been awhile

funny-tik-toks

nateworst

He sounds exactly like Bob from Bob’s Burgers

neurosciencestuff

How hearing loss in old age affects the brain

If your hearing deteriorates in old age, the risk of dementia and cognitive decline increases. So far, it hasn’t been clear why. A team of neuroscientists at Ruhr-Universität Bochum (RUB) in Germany examined what happens in the brain when hearing gradually deteriorates: key areas of the brain are reorganized, and this affects memory. The results are published online in the journal “Cerebral Cortex”.

Daniela Beckmann, Mirko Feldmann, Olena Shchyglo and Professor Denise Manahan-Vaughan from the Department of Neurophysiology of the Medical Faculty worked together for the study.

When sensory perception fades

The researchers studied the brain of mice that exhibit hereditary hearing loss, similar to age related hearing loss in humans. The scientists analysed the density of neurotransmitter receptors in the brain that are crucial for memory formation. They also researched the extent to which information storage in the brain’s most important memory organ, the hippocampus, was affected.

Adaptability of the brain suffers

Memory is enabled by a process called synaptic plasticity. In the hippocampus, synaptic plasticity was chronically impaired by progressive hearing loss. The distribution and density of neurotransmitter receptors in sensory and memory regions of the brain also changed constantly. The stronger the hearing impairment, the poorer were both synaptic plasticity and memory ability.

“Our results provide new insights into the putative cause of the relationship between cognitive decline and age-related hearing loss in humans,” said Denise Manahan-Vaughan. “We believe that the constant changes in neurotransmitter receptor expression caused by progressive hearing loss create shifting sands at the level of sensory information processing that prevent the hippocampus from working effectively”, she adds.

jumbobraids

Eminem sounds like a grown spongebob.

raavenb2619

[ID: A man says “I’ve had enough of this dude“ while gesturing at a painting labelled “stories where the protagonist chooses romance over friendship ath the very end”. End ID]

mapsontheweb

Average Jean Colors Per State, 2018

k-r-a-s-o-t-aa

i dont know why but this makes perfect sense to me like i feel it on a genetic level

eazzy--pink

Trump is no longer president of the United States.

In these following years, do not stop keeping watch of the way that history and policy will unfold. Putting a Democrat back in office will not suddenly undo years of systemic oppression so y’all better be ready to push back against him and Kamala as hard as you did with Trump.

Fuck.

babyfoxcollectionthings

claygoblin

The Silver Swan, built by John Joseph Merlin and James Cox, 1773.

Source: Mechanical Marvels, Clockwork Dreams (BBC)

soundssimpleright

oh wow, the “water” is an illusion created by spinning glass rods.

wooooooooooah

wishfishy

I will reblog this automaton every single time I see it because I adore it and you cannot stop me.

part2of3

i think i saw something once about how ancient greeks had basically automatic doors. something about a pressure plate and steam and pulley’s. but we never see this kind of stuff in period movies/tv shows. or, if we do, it’s over the top and too fantastical. i would love to see a period show that shined a light on the advancements of the time while still being 100% accurate.

cryscokid

Black History Month

Midnight’s Fire and Silhouette

Badass Black Sibling Superheroes