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綠茶對認知功能的效果明朗化
2014/04/17 10:59:31瀏覽1100|回應3|推薦37

本文簡而言之,亦即首次有學理證據顯示,綠茶萃取物,可以透過促進大腦的額頂葉鏈接,而改善記憶功能。這項發現對對認知障礙的臨床治療具有啟發價值。

http://www.medscape.com/viewarticle/823690


Green Tea's Impact on Cognitive Function Now Clear

Green tea appears to boost memory by enhancing functional brain connectivity, a new imaging study suggests.

A study led by Stefan Borgwardt, MD, PhD, from the Department of Psychiatry, University of Basel, Switzerland, shows that drinking a green tea extract enhances memory performance, a finding that researchers suggest may have important clinical implications for the treatment of neuropsychiatric disorders, including cognitive impairment.

This is "the first evidence for the putative beneficial effect of green tea on cognitive functioning, in particular, on working memory processing at the neural system level by suggesting changes in short-term plasticity of parieto-frontal brain connections," the investigators write.

The study was published online March 19 in Psychopharmacology.

Boosts Brain Plasticity

Several studies have suggested that green tea enhances cognitive functioning. However, until now, the neural mechanisms underlying these putative benefits have been unclear.

To determine whether green tea extract modulates effective brain connectivity during a working memory task and whether connectivity parameters are related to task performance, the investigators recruited 12 healthy male volunteers who consumed either a milk whey–based soft drink containing 27.5 grams of green tea extract or a similar drink without green tea.

Participants were given working memory tasks while undergoing functional magnetic resonance imaging (fMRI).

fMRI results showed increased connectivity between the parietal and the frontal cortex of the brain with the green tea extract, and these neuronal findings correlated positively with improvement in task performance.

"Our findings suggest that green tea might increase the short-term synaptic plasticity of the brain," Dr. Borgwardt said in a statement.

"Modeling effective connectivity among frontal and parietal brain regions during working memory processing might help to assess the efficacy of green tea for the treatment of cognitive impairments in neuropsychiatric disorders such as dementia," the researchers conclude.

The study was supported by grants from Rivella, which manufacturers the soft drink used in the study. The company had no role in study design, collection, analysis, interpretation of the data, writing of the report, or decision to submit for publication. The authors have disclosed no relevant financial relationships.

Psychopharmacology. Published online March 19, 2014. Full article

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mate : 國會議員大戰奇觀
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2021/04/12 17:47


精衛填海
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智商遺傳
2014/04/22 15:42
在民間往往流傳著人的智商與遺傳有關,認為父母聰明生的小孩也聰明。更多地強調天賦,認為後天的環境影響很小。我開始也接受了這樣的觀點。但後來慢慢改變了這樣的認知。
人的智商與遺傳的關係很小,後天的閱歷對人的智商改變起到很大的作用。人生存在不同的外部環境所感受到的認知不同,對人的智商影響很大。以前學過一篇課文王安石寫的《傷仲永》,一個具有詩詞天賦的小孩由於後來沒有繼續深造提高,到成年后所寫的詩詞水平仍然停留在小時候的水平上。這剛好驗證了後天對人的智商影響很大。如接受不同的教育人的智商的差異很大。還有營養也會影響到人的智商。朝鮮人與韓國人同文同種在基因上沒有什麽差別,但由於生活在不同的環境下兩國人的智力水平應該相差很大。我看過一部紀錄片一個成年的北逃者做智力測試僅僅與小孩的智商相似。
喝綠茶可以提高人的記憶力,這也應該屬於後天對人智力上的改變一種吧。
驅逐低端人口,這樣對嗎?(YUUDNYU) 於 2014-04-23 19:53 回覆:

關於智力是遺傳還是後天的問題心理學爭執了很久,至於現在他們很的結論是兩者都有,而且可能各半。

關於遺傳的因素,最明顯的就是同卵雙胞胎的研究。我再把資料放上來。

至於本篇說的綠茶萃取物可以提高記憶力,也可以說是後天的一種,但是我很懷疑效果應該是暫時的,說到這個,我應該回去跟我小孩說才是。哈哈。


SJW
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2014/04/18 12:00
記得您的文章曾提到,大腦的額頂葉和推理、組織、 運動等能力有關。而這篇文章證實綠茶萃取物可以促進大腦的額頂葉鏈接,而改善記憶功能。那麼綠茶萃取物或許不只能改善記憶功能,說不定也能改善運動功能?我亂猜的。
驅逐低端人口,這樣對嗎?(YUUDNYU) 於 2014-04-23 19:42 回覆:
嗯,太佩服您了,還想到如果綠茶萃取物可以促進記憶,那麼是否也改善了運動功能? 

這的確是一個很有趣的問題意識,我承認我沒有聯想及此,哈哈,謝謝您。 

所以我簡單查找了一些資料,雖然看到綠茶對運動功能確實有些幫助,可是看來都是透過新陳代謝的途徑,而沒有看到在神經細胞鏈接層次上的機轉。這的確是研究人員一個方向!! 

btw,您的記憶力這麼好,是不是也有品茶?(^.^)