Sensory deprivation

© ……………………..Dept, ASU, 2012Menu

Soheir ElGhonemy Assist Prof of Psychiatry

Sensory deprivation

© ……………………..Dept, ASU, 2012Menu

ILOs

By the end of this lecture, you should be able to:1- Define Sensory Deprivation. 2- Recognize Effect of sensory deprivation. 3- Identify clinical implication of sensory deprivation.4- Recognize Sensory deprivation and human rights.

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© …………………….Dept, ASU, 2012Menu Quiz

definitions

Sensory deprivation

Sensory deprivation: is the deliberate reduction or removal of stimuli from one or more of the senses. It has been used in various alternative

medicines. Short-term sessions of sensory

deprivation are described as relaxing and conducive to meditation.

Prolonged sensory deprivation can result in extreme anxiety, hallucinations, and paranoid ideation.

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Physiological effects

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Physiological effects

Sensory deprivation

• Decrease brain electrical activities and (progressive slowing of EEG waves).

• Disturbed sleep rhythm.• Changes in respiration, body temperature,

circulation and metabolic rate.• Sense of heavy muscles and fatigability.• Increase sensitivity to pain.• Biochemical changes (increase in nor-

epinephrine, TSH, ACTH and plasma cortisol levels).

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Psychological effects

I- Perception:• Change in eye focusing, object dimension and

colour perception.• Perceptual distortion.• Illusion and hallucination.II- Mood:• Irritability.• Anxiety.• Depression.

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Psychological effects

III- Cognitive functions:• Decrease concentration.• Decreased learning ability and impaired

thinking.IV- Suggestibility:• Susceptibility to propaganda and brain

washing with liability towards attitude changes.

V- Behavioral disturbances

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Clinical implications

• Patients who are isolated in wards with few visitors and non-stimulating environment are prone to develop the psychological and physiological symptoms due to sensory deprivation. e.g.,

1. Patients in intensive care units, in dialysis units, or on ventilators.

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2. Crippled patients (with hemplegia; paraplegia, quadriplegia and patients with total or partial body casts).

3. Blind patients or those who have bilateral cataract operation.

4. Psychiatric patients who are chronically institutionalized.

5. Geriatric patients living alone.6. Children who are deprived from social

interaction.

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• Industrial work if there is monotonous machine or field work in deserts as oil industry etc..; To prevent sensory deprivation more breaks should be given to the workers.

• Military personnel, sailors and space crafts.• Truck drivers in highway.• Political (Brain wash): exposing prisoners or

agents to sensory deprivation; Aim: To induce suggestion and increase susceptibility to change in attitudes and acceptance of materials which were usually rejected.

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• The five techniques of wall-standing:hooding; subjection to noise; deprivation of sleep; deprivation of food and drink were used by the security forces in Northern Ireland in the early 1970s. After the Parker Report of 1972 these techniques were formally abandoned by the United Kingdom as aids to the interrogation of paramilitary suspects.

Sensory Deprivation and Human Rights

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Sensory Deprivation /Summary

• Sensory Deprivation is the result of:1. Reduction of the sensory input.2. Absolute absence of external sensory

input.3. Sensory monotony.

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• What is Physiological Effect of Sensory Deprivation?

• Mention clinical implication of Sensory deprivation

Quiz:

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Sensory deprivation

Education

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