• Andree DeCastro

The Four Lobes of The Brain

The four lobes of the brain:

Hello students and educators, here I will go into a bit more detail about the four lobes of the brain. Be a little mindful that there is WAY more information about the four lobes than what I present here.

The frontal lobes: have you ever wondered where your personality stems from? Basically The who you are, your choice of major, your plans for the summer, and your ability to juggle your classes, your job, and your personal life all depend heavily on the cortical regions of the front of your brain. In the prefrontal cortex you got the biological underpinnings of personality, temperament and our sense of self. According to the infamous case study of Phineas Gage, a rod was struck through his prefrontal cortex, and when it was removed his whole personality changed.  The motor cortex and Broca’s area are also part of the frontal lobe. Broca’s area deals with the production of speech and the words you produce. When this is affected by trauma or brain abnormalities this can affect ones ability to produce speech.

The parietal lobes: Have you ever wondered why exactly your foot falls asleep and you get that tingling sensation? It is because you have temporarily interrupted messages from the nerve cells that carry sensory info to body maps in the parietal lobe. These lobes allow us to sense warmth, smoothness, the poke of a rude elbow and the gentleness of caress on your back or between your legs 🤤🤫. The right parietal lobe helps us locate, in three-dimensional space, the positions of external objects detected by our senses. Do you ever wonder where mathematical reasoning stems form in your brain or locating the sources of sounds of speech? Well, you can blame your left hemisphere parietal lobe, which also works with the temporal lobes to extract meaning from speech and writing. So basically as you’re reading this, your parietal lobe and temporal lobes are at work.

The temporal lobes: Do you ever wonder how sound is processed through your mind? Like what is sound and how does it work? The temporal lobes are located right above your ears. Even if you touch right above your ears the sound of your skull sounds louder than when you tap the top of your head. Nah I’m just kidding there is no difference and if you just tried that then I GOT YOU! Muahaha anyhoo, the temporal lobes have an area in the brain known as Wernicke’s area, which helps us understand the meaning of speech. So much interesting research is found here, which I will def. talk about in future posts. One thing I would say is that Wernicke’s area seems to be active not just in understanding verbal language but also even sign language. The right temporal lobe also plays a significant role in analyzing the emotional tone of language. 

A famous case study of a person who suffered a stroke in her left temporal lobe was unable to understand what people were saying to her. Regular English sounded like gibberish to her. However, the person was able to actually understand the emotional tones, like when people were trying to help her. 

The Occipital Lobes: Have you ever lifted some heavy weight in the gym or suffered a bump to the back of your head and started to see stars? If so, that visual sensation likely resulted from stimulation to your occipital lobes on the back of your brain. The occipital lobes are connected to the optical nerves which produce the sensation of vision that you see.


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