- published: 05 Feb 2013
- views: 141238
The cerebellum (Latin for little brain) is a region of the brain that plays an important role in motor control. It may also be involved in some cognitive functions such as attention and language, and in regulating fear and pleasure responses, but its movement-related functions are the most solidly established. The cerebellum does not initiate movement, but it contributes to coordination, precision, and accurate timing. It receives input from sensory systems of the spinal cord and from other parts of the brain, and integrates these inputs to fine tune motor activity. Because of this fine-tuning function, damage to the cerebellum does not cause paralysis, but instead produces disorders in fine movement, equilibrium, posture, and motor learning.
In terms of anatomy, the cerebellum has the appearance of a separate structure attached to the bottom of the brain, tucked underneath the cerebral hemispheres. The surface of the cerebellum is covered with finely spaced parallel grooves, in striking contrast to the broad irregular convolutions of the cerebral cortex. These parallel grooves conceal the fact that the cerebellum is actually a continuous thin layer of tissue (the cerebellar cortex), tightly folded in the style of an accordion. Within this thin layer are several types of neurons with a highly regular arrangement, the most important being Purkinje cells and granule cells. This complex neural network gives rise to a massive signal-processing capability, but almost all of its output is directed to a set of small deep cerebellar nuclei lying in the interior of the cerebellum.
Tout semblait sourire à Zorro
Quand il décide de faire escroc
De basculer pour palper gros, repartir à zéro.
Lui qu'aimait pourtant pas les soucis, fût en cinq sec servi !
(c'est 5 sets mec !)
Il m'a dit :
"Je paie cher, de ma vie
C'est l'enfer qui me suit mais qui me tient debout aussi !
Je paie fort, de ma vie
C'est mon sort qui me suit, ma folie"
C'est enfin le sommet, la gloire
Le type se met alors à croire
Que rien n'arrêtera son réseau
Sauf si on le plante dans le dos !
Voilà pourquoi Zorro tomba de haut en bas
Il me dit en face, juste comme ça :
"Je paie cher, de ma vie
C'est l'enfer qui me suit mais qui me tient debout aussi !
Je paie fort, de ma vie
C'est mon sort qui me suit, ma folie"
Un bien mal acquis, ne profite jamais
Zorro en fait les frais et prends le maquis
Il prie, il se cache
Il attend que passe le vent.
Puis s'installe, se refait plus fort
Tout recommence, le biz, la transe
On ne change pas ! même si parfois...
On paie cher, de nos vies.
C'est l'enfer qui nous suit mais qui maintient debout aussi !
On paie fort, de nos vies
On reste les mêmes, c'est ainsi...