Shared by Dr.K.Prabhakar

Brain and Its Functions-Part 1

Presentation This slide show provides you information on

basic facts about brain. You may have to go the Part 2 for

understanding about brain functioning and role of nurturing brain.

This presentation have been divided into four parts .

You have to go through it sequentially to understand Brain and its Functions in the context of Management disciplines in the absence of my intervention.

Early weeks crucialHuman embryo - just

6 weeks after conception.

All the parts have been in place for two weeks, and brain waves are now detectable

NEURON

THE SYNAPSE

Brains of human and comparison withother animal brain

Three Brains in One

The Triune Brain

Neocortex - Thought (including planning, language, logic & will, awareness)

Limbic System - Emotion (feelings, relationship/nurturing, images and dreams, play)

Reptilian Brain - Instinct (survival, breathing/swallowing/heartbeat, startle response)

Reptilian Brain

The brain stem part of the brain, is the most ancient -- it evolved 500 million years ago and is more like the entire brain of present-day reptiles.

For this reason, it is often called the reptilian brain.

Various clumps of cells in the brain stem determine the brain's general level of alertness and regulate the vegetative processes of the body such as breathing and heartbeat.

Reptilian Brain The brain stem is the reptilian brain. It is a remnant of our

prehistoric past. The reptilian brain acts on stimulus and response. It is useful

for quick decisions without thinking. The reptilian brain focuses on survival, and takes over when

you are in danger and you don’t have time to think. In a world of survival of the fittest, the reptilian brain is

concerned with getting food and keeping you from becoming food.

The reptilian brain is fear driven, and takes over when you feel threatened or endangered.

The Ancient Limbic System The modules that lie beneath the corpus callosum are

known as the limbic system. This area is older then the cortex in evolutionary terms and

is also known as the mammalian brain because it is thought to have first emerged in mammals.

This part of the brain, and even that below it, is unconscious, and yet has a profound affect on our

experience because it is densely connected to the conscious cortex above it and constantly feeds information upwards.

The limbic stem is the root of emotions and feelings. It affects moods and bodily functions.

The Ancient Limbic System

Emotions, our most basic reactions, are generated in the Limbic system along with the many appetites and urges that help us behave in such a way to survive.

For instance, the Amygdala, is the place where fear is registered and generated.

NEOCORTEXThe neocortex is the most evolutionary

advanced part of your brain. It governs your ability to speak, think, and

solve problems. The neocortex affects your creativity and

your ability to learn. The neocortex makes up about 80 percent

of the brain.

End of Part 1