Psychology unit 2

 Part 3

                   RIGHT and LEFT HEMISPHERE

# Cerebral cortex is responsible for many higher order function like language and information processing. The cerebral cortex is divided into sensory, motor and association areas.

# Sensory area receives input and motor area control movement of muscles.

# Association area is involved with more complex functions such as writing.

# The occipital lobe is the visual processing area of the brain.

# The outermost part of the brain is a thick piece of nervous system tissues, is divided into two hemispheres, left and right connected by a thick layer of a cells called the corpus callosum.

ASSOCIATION CORTEX

# It deals with more complex, integrative functions such as memory, emotions, reasoning , will, judgement, personality traits and intelligence.

The association areas are:----

# Somatosensory association areas permits to determine, the exact shape and texture of an object without looking at it.

# Visual association areas relates present to past , visual experience with recognition and evaluation of what is seen.

# Auditory association areas determines if a sound is a speech, music or noise.

Psychology of sensation

Sense organ are gateways of knowledge without the vision touch, hearing, smell and taste. We shall know nothing of external world. By virtue of send organs alone do we know the world arround us.

Sense organ consists of the receptors , specialised sensitive cells are associated with the ending of sensory nerve fibres and various accessory apparatus and tissues which contribute to the effectiveness with which sense organ function.

Muscular control of behaviour

Our behaviour involves action of different parts of your body . Our muscles are responsible for the bodily movement internal and external 

The muscles control is the lost when the nerve  centres or fibres are injured or diseased with exercises the muscles become fatigued . In fatigue, the muscles loose contractibility . By the rest their strength and  capacity are restored.

 Muscle stone means , the redness of the muscles to contract. It ensure smooth and ready responses . It is the tone of muscles to contract. Patients are likely to have defective muscles bone which causes difficulties  in digestion of food , elimination of waste, resting and relaxation. This should be appreciated by the nurses.

The Glandular Control of behaviour

There are two major system for sending to the body muscles, glands and organs . One is the nervous system and the other is the endocrine system. The endocrine system is made of numerous gland that are located throughout the body . These glands secrete various chemicals called hormones which affect organs, muscles and other glands in the body. The hypothalamus, which is located in the lower middle part of the brain, controls  much of the endocrine system  by regulating the pituitary gland which is located directly below and outside the brain.