neurosciencestuff:

Neural Anatomy of Primary Visual Cortex Limits Visual Working Memory
Despite the immense processing power of the human brain, working memory storage is severely limited, and the neuroanatomical basis of these limitations has remained elusive. Here, we show that the stable storage limits of visual working memory for over 9 s are bound by the precise gray matter volume of primary visual cortex (V1), defined by fMRI retinotopic mapping. Individuals with a bigger V1 tended to have greater visual working memory storage. This relationship was present independently for both surface size and thickness of V1 but absent in V2, V3 and for non-visual working memory measures. Additional whole-brain analyses confirmed the specificity of the relationship to V1. Our findings indicate that the size of primary visual cortex plays a critical role in limiting what we can hold in mind, acting like a gatekeeper in constraining the richness of working mental function.
Full Article
(Image: Shutterstock)

neurosciencestuff:

Neural Anatomy of Primary Visual Cortex Limits Visual Working Memory

Despite the immense processing power of the human brain, working memory storage is severely limited, and the neuroanatomical basis of these limitations has remained elusive. Here, we show that the stable storage limits of visual working memory for over 9 s are bound by the precise gray matter volume of primary visual cortex (V1), defined by fMRI retinotopic mapping. Individuals with a bigger V1 tended to have greater visual working memory storage. This relationship was present independently for both surface size and thickness of V1 but absent in V2, V3 and for non-visual working memory measures. Additional whole-brain analyses confirmed the specificity of the relationship to V1. Our findings indicate that the size of primary visual cortex plays a critical role in limiting what we can hold in mind, acting like a gatekeeper in constraining the richness of working mental function.

Full Article

(Image: Shutterstock)

acteon-carolsfeld:

sageflores, you at work. ;p

acteon-carolsfeld:

sageflores, you at work. ;p

(Source: haus-of-ill-repute)

nprglobalhealth:

Peter Piot and his colleagues were looking at samples from a Belgian nun who had died of a disease in Congo. The question he thought he was trying to answer: Was it yellow fever? 
Instead it was a new disease.
Read more and listen to the interview: The Co-Discoverer Of Ebola Never Imagined An Outbreak Like This

nprglobalhealth:

Peter Piot and his colleagues were looking at samples from a Belgian nun who had died of a disease in Congo. The question he thought he was trying to answer: Was it yellow fever? 

Instead it was a new disease.

Read more and listen to the interview: The Co-Discoverer Of Ebola Never Imagined An Outbreak Like This

(via medicalschool)

nevver:

Endless Summer, Ian Francis

(Source: ifrancis.co.uk)

neurosciencestuff:

The effects of very early Alzheimer’s disease on the characteristics of writing by a renowned author

Iris Murdoch (I.M.) was among the most celebrated British writers of the post-war era. Her final novel, however, received a less than enthusiastic critical response on its publication in 1995. Not long afterwards, I.M. began to show signs of insidious cognitive decline, and received a diagnosis of Alzheimer’s disease, which was confirmed histologically after her death in 1999. Anecdotal evidence, as well as the natural history of the condition, would suggest that the changes of Alzheimer’s disease were already established in I.M. while she was writing her final work. The end product was unlikely, however, to have been influenced by the compensatory use of dictionaries or thesauri, let alone by later editorial interference. These facts present a unique opportunity to examine the effects of the early stages of Alzheimer’s disease on spontaneous written output from an individual with exceptional expertise in this area. Techniques of automated textual analysis were used to obtain detailed comparisons among three of her novels: her first published work, a work written during the prime of her creative life and the final novel. Whilst there were few disparities at the levels of overall structure and syntax, measures of lexical diversity and the lexical characteristics of these three texts varied markedly and in a consistent fashion. This unique set of findings is discussed in the context of the debate as to whether syntax and semantics decline separately or in parallel in patients with Alzheimer’s disease.

Full Article

(Source: chrispratti, via wobbledygook)

humansofnewyork:

"I’ve sold fish in the market for the last thirty years, because I never had the chance to go to university. Recently my daughter graduated from Makerere, which is one of the best schools in the country. When I walked through the gates to attend her graduation, I felt so happy, because I never thought I’d see the inside of a university."(Kampala, Uganda)

humansofnewyork:

"I’ve sold fish in the market for the last thirty years, because I never had the chance to go to university. Recently my daughter graduated from Makerere, which is one of the best schools in the country. When I walked through the gates to attend her graduation, I felt so happy, because I never thought I’d see the inside of a university."

(Kampala, Uganda)

Tags: hony

laurenrakes:

Informative poster on dust mites!
Lauren Rakes

laurenrakes:

Informative poster on dust mites!

Lauren Rakes

(via scientificillustration)

victoriousvocabulary:

STHENIA
[noun]
a condition of bodily strength, vigour, or vitality.
Etymology: Neo Latin, extracted from asthenia, from Greek asthéneia, from a, “not” + sthenos, “strength”.
[Cyril Rolando]

victoriousvocabulary:

STHENIA

[noun]

a condition of bodily strength, vigour, or vitality.

Etymology: Neo Latin, extracted from asthenia, from Greek asthéneia, from a, “not” + sthenos, “strength”.

[Cyril Rolando]

Tags: word

usamakko:

光ります。どんどん色が変わります。レインボーバニーです。お値段なんと200円。 #rabbit #bunny

usamakko:

光ります。どんどん色が変わります。レインボーバニーです。お値段なんと200円。 #rabbit #bunny

(via lovelylops)

Tags: buns

yeahbutmedschool:

tonight, i’m going to fall asleep at a reasonable and humane hour!!! 

at first i’m like:

image

*around 12am*

image

*looks at clock 4:41am*
Well you know what…

image

looks like it’s going to be one of those nights again.