What Part Of The Brain Controls Speech

What Part Of The Brain Controls Speech
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Have you ever thought about how words get to be formed or how you understand what other people are saying? The answer to these questions hides in understanding which part of the brain controls speech. Speaking is a complex process, and it involves speech comprehension and speech production, and a healthy brain does it effortlessly.

Damage to any area involved in speech can cause various conditions such as dyslexia (not able to read), anomia (not able to name things), agraphia (not able to write), and many others.

What you practice in private, you’re rewarded for in public.

-Jim Kwik, the author of Minvalley’s Superbrain program

Which Part Of The Brain Is Responsible For Speaking?


What Part Of The Brain Controls Speech

Part of the brain which is responsible for speaking is Broca’s area. It is located in the frontal lobe, usually in the left hemisphere. The main function of Broca’s area is speech formation or production since it is also a part of the motor cortex.

The speech of people with damaged Broca’s area have is characterized as slurred and unclear. They usually form only very short sentences (one or two words). They are able to understand what is being said, they know what they want to say but the order from the brain to the speech organs cannot be executed. It is called Broca’s aphasia or non-fluent aphasia.

Which Part Of The Brain Deals With Speech?


The other part of the brain that deals with speech are located in the temporal (and partly parietal) lobe, also in the left hemisphere. It is called the Wernicke’s area, and it deals with understanding speech and language. That is how we can understand and react with proper emotion. It is also connected to the sensory cortex.

People who have damaged this speech centre are not able to understand what they hear. However, they do not have problems with word formation. This is why they jumble their speech as if they are just randomly ‘throwing in’ words. This is Wernicke’s or fluent aphasia.

People with damage to both areas have a condition called global aphasia.

Where Is The Speech Center Of The Brain?


What Part Of The Brain Controls Speech

The entire cerebral cortex contains of two hemispheres. They are, for the most part, symmetrical when it comes to function. However, the speech centre of the brain is located in the left hemisphere for the majority of people (90% of the right-handed, and around 70% of the left-handed people).

As for any function of the brain, we cannot say that it is made out of just one localized. It is rather a mutual effort of the temporal and frontal lobe. It is also related to vision centres (when we read) and the motor cortex (enables jaw and tongue movement).

Which Part Of The Brain Deals With Sight?


Interestingly enough, vision is controlled by the part of the brain which is furthest away from the eyes themselves – the occipital lobe. It is located in the back of your head, and it also has two hemispheres. The left hemisphere gets and processes information from the right eye and vice versa.

The primary visual cortex (V1) gets raw information from the eyes and sends them to the secondary visual cortex for further processing. The secondary visual cortex (V2, V3, and V4) is made out of the ventral stream and dorsal stream. Some visual stimuli are processed in the temporal lobe as well.


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Thanks to speech we can share our thoughts and ideas with people around us. Do you have any thoughts that you would like to share with us in the comments section below?

Stefan Mitrovic

Stefan Mitrovic

"Nula dies sine linea" is what best describes Stefan.
A constant seeker for new ideas with interest in anything and everything. Trivia master and adventurer at heart, he is a true space cadet.

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