What percentage of the brain does the cerebrum make up and what does it consist of?
83%
Left & right hemispheres, separated by the central sulcus, it containts 52 distinct regions known as Brodmann’s areas
What does the left cerebral hemisphere primarily control?
Controls right side of the body, dominant for language in most people.
Ex: Primarily controls writing for a right-handed person.
What does the right cerebral hemisphere primarily control?
Controls most functions of the left sidce ofc the body. Responsible for understanding facial expressions and emotions.
What are the four major lobes of each cerebral hemisphere
Frontal, Parietal, Temporal, Occipital
Which lobe is responsible for higher executive functioning?
Frontal Lobe
What cognitive skills are controlled by the frontal lobe?
Planning, reasoning, judgment, flexibility, insight, prioritizing, intelligence, working memory
(critical thinking)
What type of speech is controlled by the frontal lobe?
Expressive speech (Broca’s area)
Damage to Broca’s area causes what condition and is what lobe?
Expressive aphasia
Prefrontal Cortex (Frontal lobe)
How does frontal lobe damage affect personality?
Poor judgment, impulsivity, persoality changes, impaired social skills
What behavioral changes may indicate a frontal lobe tumor?
Disinhibition, poor insight, emotional and personality changes
How is the frontal lobe involved in dementia?
alterations in personality and emotional state, impaired judgment, disorganized thinking
What does “FLIPPER JW” stand for?
Acronym for Frontal Lobe functions:
-Flexibility
-Language
-Insight
-Planning
-Prioritizing
-Expressive speech
-Reasoning
-Judgment
-Working memory
What sensory function is primarily processed in the temporal lobe?
Auditory processing
Which area of the brain controls receptive language or language comprehension?
Wernicke’s area (temporal lobe)
Damage to Wernicke’s area causes what condition? Where is this located?
Receptive aphasia
Temporal Lobe
What types of memory are stored in the temporal lobe?
Long-term, episodic, and declarative memory
Ex: Remembering your childhood home or recalling historical facts
What emotional functions involve the temporal lobe?
Processing emotional responses, attachment, and social behavior
Ex: Experiencing joy while watching a heartwarming movie
Auditory hallucinations are most associated with dysfunction in which lobe?
Temporal lobe
What memory disturbances are linked to temporal lobe injury?
Anterograde and retrograde amnesia
What happens to sensory perception after a temporal lobe CVA?
Altered perception and difficulty interpreting inputs
Ex: A patient may be unable to differentiate between hot and cold temperatures after a stroke
How can temporal lobe damage affect sleep?
Sleep-wake cycle disturbances (insomnia or hypersomnia)
Problems in the temporal lobe can lead to what?
Visual or auditory hallucinations, aphasia and amnesia
What is receptive aphasia and problems with which lobe is this correlated with?
Difficulty in understanding spoken or written language due to brain damage
Temporal Lobe
What is anterograde/retrograde amnesia and what lobe is it associated with?
Trouble in forming new memories or recalling past events due to brain injury
Ex: Patient suffering from memory loss after an accident
Temporal Lobe