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Wernicke's Area: Function, Location & Quiz

Instructor: Kelly Robson

Kelly has taught High School Science and Applied Communications. She holds an Education Specialist Degree in Ed. Leadership.

Wernicke's area is an important part of the brain that is involved with helping us to understand spoken language. This lesson will cover where Wernicke's area is located in the brain, how it works, and a little bit about how it was discovered.

We also recommend watching Adipose Tissue: Function, Location & Definition and The Ribosome: Structure, Function and Location

Location

Wernicke's area is a small part of the brain that helps us to understand language. It is usually, though not always, found on the back portion of the left temporal lobe. It is found on the left side of the temporal lobe in right-handed people about 90% of the time and in left-handed people about 70% of the time. This same area is found in the brain of deaf people who use sign language as well. This last finding hints that Wernicke's area may not be used for just spoken language.

Image of the temporal lobe. Wernickes area is located in the posterior or back of the temporal lobe of the brain.
Temporal Lobe

Broca's area is closely related to Wernicke's area. It too works with spoken language and was actually discovered before Wernicke's area. Both of these areas are found on the same side of the brain, usually the left. Broca's area is found in the inferior or front of the temporal lobe. It is connected to Wernicke's area by a bundle of nerve fibers called arcuate fasciculus. These two areas work together so we can understand and produce speech.

Wernickes area and Brocas area work together to allow us to understand and construct spoken language.
Wernickes Area and Brocas Area

Discovery of Wernicke's Area

When scientists of all disciplines study the brain, they usually take a person with a disability and try to figure out which part of his or her brain is different from the brains of people without that disability. Then they compare notes on the different cases. It seems simple, but it is truly fascinating to think about how the brain works.

In 1861 Paul Broca did just this. He was a neurosurgeon who studied a man named Tan. He was called Tan because that is the only word the man could say. Tan could understand spoken language, but he could only make a sound that sounded like 'Tan.' Even though he could make this sound, it was not considered spoken language because no information was exchanged.

When Tan died, Broca studied his brain and found a lesion (bruise or yucky spot) on the front of the temporal lobe. Broca then went and studied other brains of patients who were similar to Tan. This is how he discovered Broca's area. It is the area of the brain that allows us to produce spoken language.

Ten years after Broca's discovery, Carl Wernicke, a neurologist, made a similar discovery; only this time his patients were able to speak. Even though they were speaking, the speech was incoherent or just did not make any sense. He found lesions on the same side of the brain as Broca's area, but in the back of the temporal lobe.

Carl Wernicke discovered the area of the brain that helps us to understand spoken language
Carl Wernicke

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