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Central, or cortical, department of the auditory analyzer

The central end of the auditory analyzer is located in the cortex of the upper temporal lobe of each of the hemispheres of the brain (in the auditory cortex). Particularly important in the perception of sound stimuli are, apparently, the transverse temporal gyrus, or the so-called gyrosl gyrus. As already mentioned, in the medulla oblongata, a partial intersection of the nerve fibers occurs, connecting the peripheral part of the auditory analyzer with its central part. Thus, the cortical center of hearing of one hemisphere is associated with peripheral receptors (Corti's organs) on both sides. Conversely, each organ of Corti is associated with both cortical centers of hearing (bilateral representation in the cerebral cortex).
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Central, or cortical, department of the auditory analyzer

  1. Conductor department of the hearing analyzer
    The peripheral part of the auditory analyzer is connected to the central, or cortical, end by conducting nerve pathways consisting of four segments, or neurons. The nerve fibers from the spiral ganglion, located at the base of the cochlear's spiral bone ridge, fit the cortiev's organ. This node consists of nerve cells with two processes (bipolar cells). One of these
  2. Peripheral Auditory Analyzer
    The periphery of the auditory analyzer, or the ear itself, anatomically consists of three parts: the outer, middle, and inner ear (Fig. 4). Fig. 4. The structure of the organ of hearing: 1 - auricular cartilage; 2 - external auditory canal: 3 - eardrum; 4 - auditory tube; 5 - auditory ossicles; 6 - a labyrinth; 7 - the inner surface of the eardrum:
  3. Sound-conducting and sound-perceiving functions of the auditory analyzer
    Different parts of the auditory analyzer, or organ of hearing, perform two functions of different nature: 1) acoustic conduction, that is, delivery of sound vibrations to the receptor (endings of the auditory nerve); 2) sound perception, i.e. the reaction of the nervous tissue to sound stimulation. The function of sound conduction is to transfer components of the outer, middle and part of the inner ear.
  4. CENTRAL DEPARTMENT OF THE NERVOUS SYSTEM, OR CENTRAL NERVOUS SYSTEM
    The central part of the nervous system consists of the brain and spinal cord with their ganglia. The spinal ganglia are round little bodies located along the spinal cord, to the right and to the left of it. They lie together with the spinal cord inside the spinal canal. The number of ganglia corresponds to the number of segments. Histologically, the ganglia consist of stroma and nerve cells with their processes. Outside
  5. Study of the functions of the auditory analyzer
    Speech and conversation with a whisper and colloquial speech. The subject is placed at a distance of 6 m from the doctor in such a way that the examined ear is turned in his direction, and the nurse’s opposite ear closes tightly pressing the trestle to the ear canal and the finger, while the third finger slightly rubs about II, resulting in rustling sound
  6. ANATOMY OF THE HEARING ANALYZER
    Hearing anatomy
  7. PHYSIOLOGY OF AUDIO ANALYZER
    PHYSIOLOGY OF AUDITION
  8. PHYSIOLOGY OF HIGHER DEPARTMENTS OF THE CENTRAL NERVOUS SYSTEM
    PHYSIOLOGY OF HIGHER DEPARTMENTS OF THE CENTRAL NERVOUS
  9. Diseases of the auditory nerve, pathways and auditory centers in the brain
    Lesions of the conductive part of the auditory analyzer can occur on any of its segments. The most frequent are the diseases of the first neuron, which are united in a group that has received the name of the neuritis of the auditory nerve. This name is somewhat arbitrary, as this group includes not only diseases of the auditory nerve trunk, but also damage to the nerve cells that make up
  10. Higher cortical functions and their violations
    In the bark g. M. All the information comes from the external and internal environment, where it is compared with the needs, past experience and is transformed into teams covering all life processes. Different areas of the cortex are associated with receptors and form the cortical parts of the analyzers. Violations. Agnosia - frustration, impossibility of knowledge in the field of one analyzer. There are visual, auditory, tactile,
  11. HIGH CORTEX FUNCTIONS
    The cerebral cortex is essentially a gigantic intermediate center on the path from receptor apparatus to effector. All information coming from the external and internal environment flows here, it is compared with current needs, past experience and converted into teams, often covering all life processes. It develops fundamentally new solutions, and
  12. Violation of the central mechanisms of regulation of endocrine functions (central level of damage)
    Disturbance of the central mechanisms of endocrine function regulation can be caused by a) damage at the level of neurons of the central nervous system secreting hypothalamic hormones; (thrombosis, embolism, hemorrhage, tumor, infection (encephalitis); b) damage at the level of the adenohypophysis (disruption of its blood supply, trauma, infection - tuberculoma, syphiloma), tumors, autoimmune processes. significant portion
  13. Special analyzers. Symptoms and lesions syndromes
    Analyzers are functional associations of the structures of the peripheral and central nervous systems that carry out the perception and analysis of information about the phenomena of the external and internal environment. I. P. Pavlov structurally divided the analyzer into three main sections:? Receptor formations that perceive and transform specific stimuli (peripheral section). ? Conductor
  14. Diseases of the adrenal cortex
    The adrenal glands consist of two parts: the central (medulla), producing catecholamines, and the peripheral (cortical), secreting steroid hormones. Cortical substance formed of 3 zones. Under the capsule is a narrow glomerular zone (zona glomerulosa), consisting of densely packed groups and clusters of cubic and prismatic cells with dark-colored nuclei and
  15. Cortical Disorder
    (Internet) Sensitivity - the body's ability to perceive irritation emanating from the environment or from its own organs and tissues. In physiology, the entire set of afferent systems is united by the concept of reception. Sensitivity is a special case of reception when afferent impulses lead to the formation of sensations. Not everything that is subject to reception is felt. For example:
  16. STUDY OF HIGHER CORK FUNCTIONS
    Methods for the study of higher cortical functions are described in detail in the relevant courses (psychology, childhood psychopathology). We will only point out that in the study of the neuro-logical status, gnosis, praxis, speech, memory, thinking are investigated. The necessary information about the mental state of children is obtained during the observation of their mimicry, manner of play, behavior in the new environment, etc.
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