the spinal cord. Cardiac nerves participating in the
formation of the cardiac plexus depart from the
cervical nodes. From the upper node - the upper
cardiac nerve, is involved in the formation of the
superficial cardiac plexus. From the middle and lower
nodes - the middle and lower cardiac nerves,
respectively, involved in the formation of the deep
cardiac plexus. With the help of these plexuses,
sympathetic regulation of cardiac activity is carried
out (Netter, Frank, 2014).
In the course of the internal jugular vein, first the
internal carotid, and then the common carotid artery,
the vagus nerve is located, forming a neurovascular
bundle of the neck. The vagus nerve, being mixed,
originates from the motor, sensory and
parasympathetic nuclei of the brain stem. The motor
nucleus (nucleus ambiguous), common with the
glossopharyngeal and accessory nerves, has motor
axons that innervate the muscles of the soft palate,
pharynx, and larynx.
The dorsal nucleus (nucleus dorsalis) has
parasympathetic fibers. Afferent impulses in this
nucleus come from the hypothalamus, olfactory
system, and autonomic centers of the reticular
formation. The efferent impulses of the dorsal
nucleus travel through the postganglionic fibers to the
smooth muscles of the lungs, heart, and
gastrointestinal tract. Thus, parasympathetic
regulation of respiration, palpitations and digestion is
carried out.
In the area of bifurcation of the common carotid
artery, there is a carotid glomerulus, which is a
capillary clot with a large number of chemo- and
baroreceptors. Impulses from these receptors are
transmitted along the glossopharyngeal nerve to the
nucleus of the single pathway (nucleus tractus
solitarii), common to the facial, glossopharyngeal and
vagus nerves. Similar chemoreceptors are located on
the aortic arch and transmit their impulses in the
composition of afferent fibers of the vagus nerve
along the same path. Thus, the regulation of blood
pressure and oxygen tension in the blood is carried
out (Moore, 2013)
Nerve formations in the neck are closely
connected with the brain stem, through which they
have bilateral connections with the bridge, midbrain,
cerebellum, thalamus, hypothalamus and cerebral
cortex. The presence of these connections ensures the
participation of nerve formations of the neck in the
analysis of sensory irritations, regulation of muscle
tone, autonomic and higher integrative functions.
Based on the foregoing, the cervical ganglia of the
sympathetic trunk, the cervical plexus of the spinal
nerves, the branches of the X and XI cranial nerves
and the nerve structures that enter them can act as
targets of stimulation, which significantly expands
the possibilities of neurostimulation of various
processes in the brain tissue. The neck area as a
“target” of neurostimulation seems to be a very
interesting and promising choice.
6 DISCUSSION
Thus, as a result of experimental and fundamental
studies, the main hypotheses were formulated for
realizing the clinical effectiveness of the technology
of multichannel neuroelectrostimulation of neural
formations of the neck in the treatment of
neuropsychiatric disorders.
Due to the impact on the nodes of the sympathetic
trunk and the internal carotid plexus, neurogenic
regulation of cerebral blood flow is performed due to
a change in the tone of the cerebral vessels of various
calibers: from the main arteries to the
microvasculature. The leading role in this process
belongs to the superior cervical stellate ganglion.
The impact of a focused field of electrical
impulses in the neck spreads in the form of electrical
impulses to the sublingual, glossopharyngeal and
vagus nerves, rise to the corresponding nuclei of the
brain stem, reaching the cerebellum, bridge and
frontal cortex. Thus, deep stimulation of the mid-stem
structures of the brain is performed with the release
of a large number of neurotransmitters. Under such
conditions, synoptic transmission and the
construction of new neural and glial networks are
greatly facilitated, metabolic processes both in
neurons and in neuroglia are improved. The
destruction of stagnant neural networks, as well as
pathological determinants and systems, is facilitated.
In clinical practice, multichannel
neuroelectrostimulation technology can be used not
only in the treatment of diseases of the
neuropsychiatric profile, but also in the treatment of
vegetative-vascular dystonia, headaches of various
origins, including migraine, hypertension,
sensorineural hearing loss, degenerative diseases of
the eye, neuropathies of various origins,
hyperhidrosis syndrome, orthostatic hypotension
syndrome and postural tachycardia, vestibulopathic
syndrome, as well as in the rehabilitation of patients
after stroke that one.