What is the function of the parietal lobe

Because the human brain controls many parts of the body, the structure of the human brain is very complex. Many terms may have never been heard of by people who study brain structure. Parietal lobe is one of them. I wonder if you have heard of the parietal lobe. It is actually a part of the brain. Next, I will give you a detailed introduction to what the parietal fluid is and the specific functions of the parietal lobe in the human body.

1. What is the parietal lobe

The postcentral gyrus of the parietal lobe integrates various somatosensory stimuli to achieve correct identification of the shape, texture, and weight of objects. The more posterolateral areas provide correct perception of visual spatial relationships and integrate related perceptions with other senses to create an awareness of the trajectory of moving objects. Awareness of the location of various parts of the body also originates here. In the dominant (left) hemisphere, the inferior parietal area executes.

What is the function of the parietal lobe?

The parietal cortex of the brain plays an important role in the process of concentration. Parietal lobe: between the frontal lobe, temporal lobe, and occipital lobe. Includes the postcentral gyrus, superior parietal gyrus, and inferior parietal gyrus. The parietal lobe of the brain is mainly composed of the cortex that senses and monitors the responses of various parts of the body to external stimuli. Due to its specific location, the sensory association area of ​​the parietal lobe can integrate a variety of sensory information with speech. Damage to this part can lead to writing and reading difficulties.

3. What are the parietal lobe lesions?

1. Sensory impairment:

The parietal lobe is the cortical sensory center. Irritative lesions in the postcentral gyrus cause contralateral focal sensory epilepsy or paresthesia, and destructive lesions lead to contralateral hemisensory disorders, but most of them are incomplete hemisensory disorders.

2. Complex feelings:

Lesions in the superior parietal lobule cause complex sensory disturbances on the contralateral side, including two-point discrimination, solid sense, skin orientation sense, and pattern sense. There may be spontaneous pain, tactile retention and single point sensation.

3. Body image disturbance:

Impaired cognition of various parts of the body, manifested as:

Hemiplegia: Not paying attention to or caring about one's own hemiplegia, as if it has nothing to do with oneself;

Hemi-neglect: Loss of proper attention to one side of the body;

Loss of limb sense, feeling that a limb no longer exists;

Hemiplegia ignorance: not knowing or denying that one has hemiplegia;

Phantom of multiple limbs: believing that one has one or more extra limbs;

Illusion of limb displacement: for example, believing that one's upper limbs are growing on the stomach or on the ceiling.