Question

if one of the lobes of the cerebrum were damaged, would the person lose all functions of that lobe?

Answer 1

if one of the lobes of the cerebrum gets damaged the person only loses functions of the lobe depending on wheich part of the lobe is damaged.

damage to the frontal lobes causes loss of the ability to solve problems and to plan and initiate actions. But some specific impairments vary depending on which part of the frontal lobe is damaged.If the back part of the frontal lobe which controls voluntary movements is damaged, weakness or paralysis can occur. Because each side of the brain controls movement of the opposite side of the body, damage to the left hemisphere causes weakness on the right side of the body, and vice versa.If the middle part of the frontal lobe is damaged, people may become apathetic, inattentive, and unmotivated. Their thinking becomes slow, and their responses to questions are very slow.If the middle back part of the left frontal lobe also called Broca area is damaged, people may have difficulty expressing themselves an impairment called Broca (expressive) aphasia.

If the front part of the frontal lobe is damaged, any of the following may result:

• Difficulty temporarily holding information available for processing

• Reduced fluency of speech

• Apathy (lack of emotion, interest, and concern)

• Inattentiveness

• People who lose their inhibitions may be inappropriately elated (euphoric) or depressed, excessively argumentative or passive, and vulgar. They may show no regard for the consequences of their behavior. They may also repeat what they say. Some people develop similar symptoms when they get older or if dementia develops. These symptoms may result from degeneration of the frontal lobe.

• Delayed responses to questions

• A striking lack of inhibition, including socially inappropriate behavior

Certain functions tend to be controlled more by one of the parietal lobes, It is considered the dominant lobe. The other lobe (nondominant) has other functions, such as enabling people to be aware of how the body relates to the space around it.

Damage to the front part of the parietal lobe on one side causes numbness and impairs sensation on the opposite side of the body. Affected people have difficulty identifying a sensation’s location and type (pain, heat, cold, or vibration). People may have difficulty recognizing objects by touch (that is, by their texture and shape).If the middle part is damaged, people cannot tell the right from the left side and have problems with calculations and writing. They may have problems sensing where parts of their body are (a sense called proprioception).If the nondominant (usually right) parietal lobe is damaged, people may be unable to do simple skilled tasks, such as combing their hair or dressing—called apraxia. They may also have trouble understanding how objects relate to each other in space. As a result, they may have trouble drawing and constructing things, and they may get lost in their own neighborhood. These people may also ignore the serious nature of their disorder or deny its existence. They may neglect the side of the body opposite the brain damage (usually the left side).

n most people, part of the left temporal lobe controls language comprehension. If that part is damaged, memory for words can be drastically impaired, as can the ability to understand language—an impairment called Wernicke (receptive) aphasia.If certain areas of the right temporal lobe are damaged, memory for sounds and music may be impaired. As a result, people may have trouble singing.Damage that affects the limbic lobe usually results in a variety of problems.

If seizures result from damage to the temporal lobe area in the limbic lobe, people may not be able to control their feelings or to think clearly. They may smell bad odors that are not there (a type of hallucination). Occasionally, these seizures cause personality changes such as humorlessness, extreme religiosity, and obsessiveness. People may also have an overwhelming urge to write.