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Symptoms of disease - violation of perception

For perception of the defect (negative symptoms) can not be determined, because perception is the primary source of information for mental activity. To the positive symptoms for perception are an illusion (incorrect assessment of the request from the body of the feelings of information) and hallucination (violation of perception in one or more of the organs of sense (analyzers), in which false (false) perception of a non-existent, unperceived sensory information is treated as real).

Perceptual it is also classified according to the senses, which are distorted information (example: «visual hallucinations», «auditory hallucinations», «tactile hallucinations» - they are called «cenestopathy»).

The initial stage of the act of perception is a sensation, in the process of which are reflected some quality properties of objects, images and events. The feeling is in force, the quality of a location and sensual overtones. The sum of several sensations is perception. As a result of successive acts of perception in the brain is formed of a number of ideas, which for a long time remain in memory and strong-willed effort may, if necessary, be reproduced in mind.

Thus, the ideas occur without the presence at the moment of the stimulus. On the contrary, perception is the process of reflection images and phenomena of reality with a direct impact on their receptors.
The correctness of the act of perception depends on the status of other physical functions (consciousness, attention, etc.).

Physiological basis of perception serves as an analytical-synthetic activities analyzers, constituting the first signal system (the influence of the second). In the perception of, for example cars, riding on the street, we get not some isolated experience, and a holistic visual and auditory images of the car with his characteristic features: form, size, color, features of the movement, a characteristic sound, etc.

Important role in the process of perception plays a past experience of the person. On the basis of his experience people can learn a number of things and phenomena: animals, household items, instruments of production, natural phenomena, etc. The holistic nature of perception, the reliance on the allocation of essential features allow the person to know such things and phenomena, which are slightly different from the samples, perceive them earlier. If the man show, for example, the image of the dog is not known for his breed, he nevertheless easily recognize that it is a dog, although unusual shape or color.

The dependence of perception of a person's life experience, education, perception, profession, needs and motives leads to the fact that the completeness and accuracy of the perception of the one and the same objects and phenomena may be different for different people. Perception, being, as any process of cognition, the reflection of the material world, depends on the characteristics of the individual perceiving subject, his previous experience, knowledge, interests. Features of the individual and of the body, needs and motives perceptions, motivations influence the process of perception, highlighting the most important for the receiver of the human hand, the quality and features of the object of perception. Just like a feeling, arising perception is also the reflection of what exists objectively, independently from the subject. Sensation and perception are the subjective way of the objective world.
Sometimes to violations of perception join violations of thinking, and in this case, the illusions and hallucinations are delusional interpretation. This nonsense called «sensual». This is nonsense shaped, with a predominance of illusions and hallucinations. Ideas when it fragmented, inconsistent - primary violation of sensory cognition (perception).

Which diseases there is violation of perception

To the routine external stimuli. Day light suddenly blinded, painting surrounding objects is unusually bright. Sounds stun, slamming the door it sounds like a shot, a clatter of plates becomes unbearable. Odors are perceived badly, causing severe irritation. Touch the body tissue seem to be rough. These changes of perception are called hypertension. The opposite of her condition - hypoesthesia, which is expressed in decrease of susceptibility to external stimuli and is connected with the mental fatigue. The surrounding becomes dim, uncertain, loses sensual concreteness. Things like lose colors, all looks pale and formless. Sounds hear the muffled voices of others lose their intonation. Everything seems to be sedentary, frozen.

Hallucinations are usually called perception, arising without the presence of a real object (vision, ghosts, imaginary sounds, voices, smells, etc.). Hallucinations are, as a rule, a consequence of the fact that the perception is rich not valid external impressions, and inner images. A person who is in the power of hallucinations, they are experienced as a truly perceived, i.e. people during hallucination really see, hear, smell, and do not imagine or represent. For hallucination subjective sensory feelings are the same as valid, as and outgoing from the objective world.

The greatest interest is usually visual hallucinations, characterised by an unusual diversity: visions can be formless (flame, smoke, fog) or, on the contrary, appear to be more clear than the images of real objects. The value of visions is also characterized by large amplitude: there are as thumbnails, so and enlarged, the giant. Visual hallucinations can be and colorless, but much more often they have a natural or extremely intense colouring, usually bright red or blue. Visions can be mobile or stationary, not changing content (stable hallucinations) and constantly changing in the form of a variety of events, played out like on the stage or in the cinema (hallucinations). Arise single images (single hallucinations), part of the subjects, the body (one eye, one half of his face, ear), the crowds of people, flocks of animals, insects, fantastic creatures. The content of the visual hallucinations also has a very strong emotional impact: may frighten, cause terror or, on the contrary, interest, admiration, even admiration.

From hallucinations should be distinguished illusion, i.e. erroneous perception of the real things or phenomena. Obligatory presence of a real object, although the perceived wrongly, is the main feature of illusions, usually shared on the affective, verbal (word) and pareidolia.

Affective (affect short - term, strong emotional arousal) illusions most often caused by fear or anxious, depressed mood. In this state, even hanging on a coat-rack clothes may seem like a robber, and a random passer - by, a rapist and a murderer.

Verbal illusions are in a false perception of the content of the reality of the conversations around; it seems to a person that these conversations contain allusions to some indiscretions, bullying, hidden threat to his address.

A very interesting and informative pareidolia illusion, usually caused by a reduction of the tone of the mental activity, the General passivity. The usual patterns on the Wallpaper, cracks on the walls or on the ceiling, a variety of light and shade are perceived as a vivid picture, fairy-tale characters, fantastic monsters, unusual plants, colorful panoramas.

Which doctor should I contact if there is a violation of perception

• Psychiatrist

Are you experiencing violation of perception? You want to know more detailed information, or you need an inspection? Please sign up on reception to the doctor! Doctors will examine you, examine the external signs and help to determine the disease the symptoms, they will consult you and provide the necessary assistance. You can also call the doctor on the house.

Do you feel disrupted perception? You should be very careful approach to your health in general. People pay not enough attention to the symptoms of the disease and don't realize that these diseases can be critically dangerous. There are many diseases that in the beginning didn't manifest in our body, but in the end it turns out, unfortunately, it have already been treated too late. Every disease has its own specific features typical symptoms - called symptoms of the disease. Definition of symptoms is the first step in the diagnosis of diseases in general. You just need a few times a year to be screened by a doctor, not only to prevent a terrible disease, but also to maintain a healthy spirit in a body and the organism in general.

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Map of the symptoms and the types of disorders is intended solely for educational purposes. We strongly recommend do NOT self-medicate; on all matters relating to the definition of the disease and ways of its treatment, contact your doctor. Md-tips is not responsible for the consequences of use information posted on the site.