Where is parietal region

In fact, the parietal lobe is a primary sensory area , which means that it is the starting point of sensory processing within the brain.

These are the somatic senses, meaning that they come from the body. The information from these senses helps a person form physical sensations taken from the world around them.

In order to carry out this function, the parietal lobe receives sensory information from all over the body. Additionally, it helps with the interpretation of symbols.

This includes those in written and spoken language, mathematical problems, and codes and puzzles. The parietal lobe also plays a role in functions such as navigation and controlling the body, as well as understanding spatial orientation and direction.

A person who is right-handed may have a more active left hemisphere parietal lobe. The left lobe tends to deal more with numbers, letters, and symbols. The right hemisphere may be more active in people with a dominant left hand. This hemisphere is associated with image interpretation and spatial relationships. That said, these distinctions do not limit the other side of the lobe. Everyone uses both the right and left sides of the parietal lobe and brain.

The following are some key areas of the parietal lobe:. The somatosensory cortex in the front part of the parietal lobe resides in two areas: the postcentral gyrus and the posterior paracentral lobule. It helps process and interpret touch sensations and helps discriminate between them. For example, it helps with telling the difference between something that is cold and something that is painful.

It also includes the parietal association cortex, which coordinates and integrates information from all the senses. It helps the brain associate symbols and meaning and assists with word recognition. This gives the brain the ability to assign meaning and name objects in the environment. It also helps use symbols and language, thus playing a role in abilities such as drawing, reading, and reasoning. This helps a person understand written words and mathematical equations.

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The parietal lobe is structurally divided into the somatosensory cortex , inferior parietal lobe, superior parietal lobe, and precuneus. The sensory information is carried to this area of the brain via neural pathways to the spinal cord, brain stem and thalamus , which then project to the somatosensory cortex. The sensory information then gets integrated into a representational map of the body within the brain. One of the main responsibilities of the somatosensory cortex is localization of sensations.

This means that it can pinpoint the exact point on the body where sensation is felt. It is also responsible for the perception of different degrees of pressure, for example, being able to judge the weight of objects. This area of the parietal lobe can also perceive the shape and texture of objects through touch, as well as aiding with spatial recognition.

This region is concerned primarily with language, mathematical operations, and body image. It is also important for spatial attention, visuomotor, auditory processing, and has been suggested to be involved in the perceptions of emotions through facial expressions Radua et al.

Damage to this area may result in impairments in speech repetition and being unable to complete mathematical problems. This region is concerned with spatial orientation and sensorimotor integration. It also receives a lot of visual and sensory signals from the hands.

Damage to this area may result in the inability to recognize objects by touch, as well as hemispatial neglect a deficit in attention and awareness of one side of the field of vision.

The precuneus is located on the medial middle surface of the parietal lobes. Because of this, it makes it one of the least accurately mapped areas of the cortex. Functioning neuroimaging suggests that the precuneus is involved in tasks such as visuo-spatial imagery being able to analyze, perceive, and manipulate visual patterns and images , episodic memory retrieval reliance on the reactivation of sensory information that was present when encoding and processing a memory , and the ability to take first-person perspectives.

Damage to the parietal lobes may be the result of conditions such as a stroke, vascular disease, or a tumor. It could also have resulted from a traumatic brain injury or an infection. There are also functional differences of damage between the left and the right side of the parietal lobes.

When the left side is damaged, this tends to cause more issues with being able to make precise hand movements, resulting in drawings being clumsy and difficulty writing. Left side damage can also cause issues with mathematics acalculia , as well as leading to more language disorders aphasia.

Someone with this condition may have difficulty identifying parts of their own body, be unable to distinguish the left and right sides of their body or environment, as well as difficulty with mathematics, reading, and writing. Damage to the right side of the parietal lobes is mostly perceptual.

People with this damage may be able to analyze a picture in separate parts but may struggle to integrate these into a whole image. Parietal Lobe: Function, Location and Structure The parietal lobe receives and manages sensory input and is located just under the parietal bone of the skull.

Author: Spinalcord. Where is the Parietal Lobe Located? What is the Function of the Parietal Lobe? Some of the other functions of the parietal lobe include: Distinguishing between two points, even without visual input. Localizing touch: When you touch any object with any part of your body, your parietal lobe enables you to feel the sensation at the site of the touch and not, say, in your brain or all over your body.

Integrating sensory information from most regions of the body. Visuospatial navigation and reasoning: When you read a map, follow directions, or prevent yourself from tripping over an unexpected obstacle, your parietal lobe is involved. The parietal lobe is also vital for proprioception—the ability to determine where your body is in space, including in relationship to itself. For instance, touching your finger to your nose without the assistance of a mirror is a function of the parietal lobe.

Some visual functions, in conjunction with the occipital lobe. Assessing numerical relationships, including the number of objects you see. Assessing size, shape, and orientation in space of both visible stimuli and objects you remember encountering.

Mapping the visual world: a number of recent studies suggest that specific regions in the parietal lobe serve as maps to the visual world. Coordinating hand, arm, and eye motions. Processing language. Coordinating attention. Those structures include: Postcentral gyrus: This region is the brain's primary somatosensory cortex, and maps sensory information onto what is known as a sensory homonculus. Some researchers also refer to this region as Brodmann area 3.

Posterior parietal cortex: This region is thought to play a vital role in coordinating movement and spatial reasoning. It also plays a role in attention, particularly attention driven by new stimuli, such as when an animal jumps into the road while you are driving.

Superior parietal lobule: This region helps you determine your own orientation in space, as well as the orientation of other objects. It also receives significant input from the hand, suggesting that it helps coordinate fine motor skills and sensory input from the hands.