According to the generally accepted opinion, the main value of the cerebellum is that it corrects and complements the activities of other motor centers. The main function of the cerebellum – the regulation of posture and muscle tone, to about ordination of slow movements and postures maintain reflexes and correlator to tion quick purposeful movements generated by the motor cortex of the cerebral hemispheres. It is assumed that each region can of cerebellum (arhiotserebellum, paleotserebellum and neotserebellum) has certain responsibilities to coordinate the processes of muscle activity.
Arhiotserebellum (or interior) regulates the activity ve with tibulyarnyh nuclei of the medulla oblongata and reticular neurons forms a tion bridge. Thus, it affects the balance of processes and forms and Nia n of PS . This effect is achieved in that the bark arhiotserebelluma due Purkinje neuron cells regulates state tent nucleus (i.e. p mozit their activity upon excitation Purkinje cells, or, conversely, increases their activity during braking Purkinje cells). In turn, the excitation of neurons activates neurons in the nucleus of the tent west and b ulyarnyh cores and th rhyons of the reticular formation of the bridge, resulting in increased activity of the alpha-motoneurons of the extensor muscles. De I telnost arhiots e rebelluma based on information from the receptors of the vestibular apparatus of the vestibular-cerebellar volo to us from entering into of becoming a nuclear-cerebellar path.
Paleotserebelluma function (or the middle part of the cerebellum) – is interac m Nye coordination and posture purposeful movement, and correction s complements relatively slow movement mechanism based Obra T -coupling. This function is implemented with two intermediate mo nuclei of the cerebellum – probkovidnogo spherical and which influence the activity edges with Nogo nuclei and reticular formation of the medulla oblongata. Figure s NOSTA paleotserebelluma based on information received from myshe h GOVERNMENTAL, tendon and articular receptors, as well as the motor cortex. Fung to tion correction slow movement is important in the process of y chenii. However, it cannot be implemented when performing fast and very complex movements, t. e. in the face of time pressure.
Neocerebellum (or the lateral part of the cerebellum) plays an important role in the programming of complex movements, which are performed without the use of a feedback mechanism. Activities neotserebe l Luma is based on information received from the associative areas of the cortex ( “design”). It is assumed that the cerebellum programs each cl e blowing step on the basis of information on the previous year.