Nouvelle Etude : Absence D'altération De La Mémoire Et Des Facultés Cognitives

[zoîberg 0]

Bonjour,

selon une étude américaine récente la consommation régulière de cannabis n'altérai pas les fonctions cognitives et de mémoires...

La source :lien mort... désolé
L'étude : https://www.ncbi.nlm.nih.gov

 

 

Pharmacol Biochem Behav. 2010 Sep;96(3):333-41. doi: 10.1016/j.pbb.2010.06.003. Epub 2010 Jun 18.
Neurophysiological and cognitive effects of smoked marijuana in frequent users.
Hart CL1, Ilan AB, Gevins A, Gunderson EW, Role K, Colley J, Foltin RW.
Author information
Abstract
RATIONALE:

Previously, we reported that acute marijuana intoxication minimally affected complex cognitive performance of daily marijuana smokers. It is possible that the cognitive tests used were insensitive to marijuana-related cognitive effects.
OBJECTIVES:

In the current study, electroencephalographic (EEG) signals were recorded as daily marijuana users performed additional tests of immediate working memory and delayed episodic memory, before and after smoking marijuana.
METHODS:

Research volunteers (N=24), who reported smoking approximately 24 marijuana cigarettes/week, completed this study. Participants completed baseline computerized cognitive tasks, smoked a single marijuana cigarette (0%, 1.8%, or 3.9% (9)-THC w/w), and completed additional cognitive tasks; sessions were separated by at least 72-hours. Cardiovascular and subjective effects were also assessed throughout sessions.
RESULTS:

Overall performance accuracy was not significantly altered by marijuana, although the drug increased response times during task performance and induced a response bias towards labeling "new" words as having been previously seen in the verbal episodic memory task. Marijuana reduced slow wave evoked potential amplitude in the episodic memory task and decreased P300 amplitude and EEG power in the alpha band in the spatial working memory task. Heart rate and "positive" subjective-effect ratings were increased in a (9)-THC concentration-dependent manner.
CONCLUSIONS:

Relative to previous findings with infrequent marijuana users, the frequent users in the current study exhibited similar neurophysiological effects but more subtle performance effects. These data emphasize the importance of taking into account the drug-use histories of research participants and examining multiple measures when investigating marijuana-related effects on cognitive functioning.

Copyright 2010 Elsevier Inc. All rights reserved.

PMID:
20600251
[PubMed - indexed for MEDLINE]

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Voilà!

Modifié mars 1, 2015 par Jim
insertion texte (avant disparition)

[planteur_venu_du_nord 2]

Salut !!Bonne info a voir si elle est vrai .

 

 

Et a tout les coup sa passera pas dans le jt de tf1 ça...

[armenias 0]

J'avoue !! Super intéressant. Mais effectivement, on risque pas d'en entendre parler à la TV..

[welikethat 2]

Ils font chier les média !! Pourquoi ils en parleraient pas pour une fois

[zoîberg 0]

Bonjour,

 

Depuis que les États-Unis s'ouvrent à la légalisation, y a énormément d'étude qui sont faites actuellement en faveur du Cannabis, mais bon , y a aussi un aspect commerciale derrière, ils ne vont pas tirer sur quelques choses qui rapporte beaucoup d'argent à l'État....