Lobes of the Brain and function

List the lobes of the brain

• frontal lobe

• parietal lobe

• temporal lobe

• occipital lobe

• central sulcus

  • precentral gyrus

  • postcentral gyrus

• lateral sulcus

The ____ separates the front and parietal lobes of the brain

central sulcus

Name all of the central gyrus of the brain

Precentral gyrus

postcentral gyrus

What do the precenral gyrus and postcentral gyrus relate to?

central sulcus

The precentral gyrus belongs to the ____ lobe

frontal

The postcentral gyrus belongs to the ___ lobe

parietal

Why will regions that are dedicated to a body part be more sensitive?

There are more sensory neurons coming from that part of the body

How was the primary sensory and motor cortex mapped out?

by poking around in the primary sensory cortex with patient confirming where they felt that probe on their body

What is the sensory homumculus?

a visual representation on what we would look like if our body parts were proportionally the same size as the number of sensory neurons coming from that body part

What are the parts of the sensory regions?

1. primary somatosensory cortex

2. somatosensory association area

3. primary visual cortex

4. visual representation

5. primary auditory

6. auditory association

What is the function of the primary somatosensory cortex and where is it located?

1. Found on the postcentral gyrus 

2. Receive things we are able to feel through our skin, all sensations. All send action potential from sensory neurons to this particular cortex 

What is the function of the somatosensory association area?

Region where information is processed

What would damage to the somatosensory association area do?

the person would be unable to interpret what they are feeling/touching, it would allow someone to also be unaware of pain in that area

How would damage to the primary somatosensory cortex effect a person?

This person would be unable to feel something on their skin because the signal is not being delivered/or received from the brain. The sensory information is not accepted at all.

When we see “area” in the name what can that tell us the general function is?

interpretation

What is the function of the primary visual cortex?

where we receive sight and vision from the eyes

Where is the primary visual cortex located?

occipital lobe

What would damage to the primary visual cortex be?

no visual interpretation will be sent to the brain

What is the function of the visual association area?

able to interpret what we see

Describe what would happen if the visual association area were to be damaged?

be able to see things (i.e., brightness, color, shapes, dimness, etc) but will not be able to interpret the visual information. But if someone was handed something, if their somatosensory was in tact, now they can interpret that item.

If there were damage to one sense, would that person be unable to live normally?

They can live normally, they would just rely on their other senses to figure things out.

What is the function of the primary auditory cortex?

sound information from ears and cochlea will come in

Where is the primary auditory cortex located?

temporal area

What is the function of the auditory association area?

where sound information from the ears and cochlea will be interpreted

Where is the auditory association area located?

temporal area

What would damage to the auditory association area do?

unable to interpret what you are hearing, no idea what is is or means

What is the function of wernicke’s area and what does it associate with?

functions: types of association area, allows you to interpret language (one of the language centers)

associates: with the auditory association area

What would damage to wernicke’s area be?

wernicke’s aphasia, we will see a person not be able to understand language. A giant jumble of words will happen.

What is the function of Broca’s area and what is it associated with?

function: allows you to speak a language, in the vicinity of the temporal lobe as well as the frontal lobe. Communicates with different things within the lobes

associated with: the auditory association area

What are the regions of motor cortex?

primary motor cortex and premotor cortex

Where is the primary motor cortex located and what is the function?

location: found within the precentral gyrus

function: starts and initiates the voluntary movement of muscles by sending AP to the motor neuron

What is the function of the premotor cortex?

gives ability to have motor memory