Neuropsychology Overview Quiz

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Questions and Answers

What is the primary function of the medulla?

  • Processing sensory information
  • Regulating emotional responses
  • Coordinating eye movements
  • Controlling basic vegetative processes (correct)

Which structure serves as a relay station for sensory information to the cortex?

  • Basal Ganglia
  • Cerebellum
  • Thalamus (correct)
  • Hypothalamus

What role does the pons play in the brain?

  • It links the cerebellum to the rest of the brain (correct)
  • It controls basic vegetative processes
  • It is involved in emotional regulation
  • It regulates body temperature

Which brain structure is associated with balance and skilled movement execution?

<p>Cerebellum (B)</p> Signup and view all the answers

What is the primary function of the basal ganglia?

<p>Influence movement via the motor cortex (D)</p> Signup and view all the answers

What process involves transforming stem cells into specialized neurons and glial cells?

<p>Cell differentiation (D)</p> Signup and view all the answers

Which part of the brain is involved in controlling behaviors related to homeostasis?

<p>Hypothalamus (C)</p> Signup and view all the answers

What is one consequence of damage to the limbic system?

<p>Impaired detection of emotions (D)</p> Signup and view all the answers

What did Gall primarily focus on regarding brain functions?

<p>Localization within the cerebral cortex (C)</p> Signup and view all the answers

What was a significant finding from Broca's work with patient 'Tan'?

<p>Damage to the left frontal region impaired language. (D)</p> Signup and view all the answers

Which type of aphasia allows a patient to speak normally but convey little meaningful content?

<p>Fluent aphasia (B)</p> Signup and view all the answers

In neuropsychology, what is the primary aim of studying anatomo-clinical correlations?

<p>To explore the relationship between cognitive functions and neurophysiological bases. (D)</p> Signup and view all the answers

Which patient is known for experiencing a personality change due to brain injury?

<p>Phineas Gage (C)</p> Signup and view all the answers

What is the primary cognitive difficulty experienced by individuals with prosopagnosia?

<p>Inability to recognize faces (B)</p> Signup and view all the answers

What impairment did H.M. experience after the removal of his hippocampus?

<p>Inability to encode new information (B)</p> Signup and view all the answers

Which part of the brain is primarily associated with damage leading to associative prosopagnosia?

<p>Right anterior temporal regions (B)</p> Signup and view all the answers

What type of aphasia does a patient with disconnection between Wernicke’s area and Broca’s area typically experience?

<p>Conduction aphasia (D)</p> Signup and view all the answers

How does someone with apperceptive prosopagnosia typically process faces?

<p>Cannot make sense of faces at all (A)</p> Signup and view all the answers

What was one of Gall's significant contributions to neuroscience?

<p>Distinguished between grey and white matter (A)</p> Signup and view all the answers

What percentage of the population is estimated to have some form of prosopagnosia?

<p>1 in 50 (D)</p> Signup and view all the answers

Which of the following best describes the difference between perceptual processes and associative processes in prosopagnosia?

<p>Associative processes involve memory recall of familiar faces. (A)</p> Signup and view all the answers

What alternative recognition strategies do individuals with prosopagnosia rely on?

<p>Feature-by-feature recognition strategies (D)</p> Signup and view all the answers

Which condition is most commonly associated with prosopagnosia?

<p>Object recognition deficits (A)</p> Signup and view all the answers

What role does the fusiform gyrus play in prosopagnosia?

<p>It is critical for recognizing faces. (C)</p> Signup and view all the answers

What is a core feature of Broca's aphasia?

<p>Difficulty in producing coherent speech (D)</p> Signup and view all the answers

What type of speech is commonly associated with Broca's aphasia?

<p>Effortful and non-fluent speech (B)</p> Signup and view all the answers

Which of the following best describes aggramatism in Broca's aphasia?

<p>Omission of function words and inflections (C)</p> Signup and view all the answers

What is often preserved in patients with Broca's aphasia despite their language difficulties?

<p>Reading aloud capability (B)</p> Signup and view all the answers

What does 'telegraphic speech' refer to in the context of Broca's aphasia?

<p>Speech that lacks function words and uses only content words (C)</p> Signup and view all the answers

Which of the following conditions can lead to aphasia?

<p>Stroke, degenerative disorders, and brain injuries (B)</p> Signup and view all the answers

How do most patients with Broca's aphasia feel about their language difficulties?

<p>They are aware and have insight into their difficulties (C)</p> Signup and view all the answers

Which of the following statements is NOT true about Broca’s aphasia?

<p>Speech output is typically fluent and well-structured. (C)</p> Signup and view all the answers

What is a common condition experienced by approximately 85% of aphasic patients?

<p>Trouble in understanding or using syntactic structures (C)</p> Signup and view all the answers

Which type of aphasia is characterized by difficulties in understanding sentences with reversible roles?

<p>Broca's aphasia (D)</p> Signup and view all the answers

Which of the following is a consequence of the syntactic disturbances in aphasic patients?

<p>Impoverishment of syntactic structures in spontaneous speech (C)</p> Signup and view all the answers

In the context of syntactic structures, what do syntactic trees help to establish?

<p>How meaning can be derived from syntactic structures (A)</p> Signup and view all the answers

What role does lexical semantics play in language?

<p>It studies the systematic relationship between word meanings. (A)</p> Signup and view all the answers

Which area of the brain is NOT associated with syntactic processing?

<p>Cuneus (BA 30) (A)</p> Signup and view all the answers

What is agrammatism most commonly associated with in aphasic patients?

<p>Difficulty producing grammatical vocabulary elements (A)</p> Signup and view all the answers

What is a key function of semantic lexicons?

<p>To connect words through semantic relations (B)</p> Signup and view all the answers

What primary factor allows MRI scanners to detect changes in magnetic signals from the body?

<p>Concentrations of hydrogen atoms (A)</p> Signup and view all the answers

How does functional magnetic resonance imaging (fMRI) differ from structural MRI?

<p>It can measure neural activity (D)</p> Signup and view all the answers

What is the BOLD response primarily a measure of in fMRI?

<p>Blood flow changes related to neural activity (B)</p> Signup and view all the answers

Which property of oxygenated hemoglobin is key for fMRI detection?

<p>It is diamagnetic and repelled by magnetic fields (D)</p> Signup and view all the answers

What is a limitation of fMRI compared to techniques like EEG?

<p>Lower temporal resolution (B)</p> Signup and view all the answers

What occurs during the haemodynamic response in activated brain areas?

<p>Oxygenated blood levels increase to supply active neurons (A)</p> Signup and view all the answers

In what plane can fMRI images be obtained?

<p>Sagittal, coronal, or horizontal transverse (B)</p> Signup and view all the answers

What happens to oxygen levels related to active neurons during fMRI?

<p>Higher neural activity corresponds to increased oxygen levels (B)</p> Signup and view all the answers

Flashcards

Phrenology

The idea that bumps on the skull correspond to specific mental abilities.

Neuropsychology

The study of the relationship between cognitive functions and their underlying brain structures.

Cerebral Cortex

The outer layer of the brain responsible for higher-level cognitive functions.

Broca's Aphasia

The inability to produce language, often caused by damage to Broca's area in the left frontal lobe.

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Wernicke's Aphasia

The ability to understand language, often impaired by damage to Wernicke's area in the left temporal lobe.

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Broca's Area

A specific region in the left frontal lobe crucial for language production.

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Wernicke's Area

A specific region in the left temporal lobe crucial for language comprehension.

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Conduction Aphasia

A type of aphasia where a person can understand language but cannot repeat it, caused by damage to the connection between Broca's and Wernicke's areas.

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Medulla

The lowest part of the brain, connecting to the spinal cord. It controls basic life functions like breathing and heart rate.

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Pons

A bridge between the cerebellum and the rest of the brain. It also helps with visual and auditory processing.

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Cerebellum

Located at the back of the brainstem, responsible for balance, coordination, and learning new motor skills.

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Hypothalamus

Part of the forebrain that controls essential behaviors like eating, drinking, and body temperature.

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Thalamus

A relay center in the brain that receives sensory information and passes it on to the cortex.

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Basal Ganglia

A group of structures that help with movement planning and execution, working with the motor cortex.

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Limbic System

A network of brain structures involved in emotions, memories, and motivation.

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Neurogenesis

The process of generating new neurons from stem cells, contributing to brain development.

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Prosopagnosia

A cognitive disorder where individuals struggle to recognize faces, including their own.

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Occipital Face Area (OFA)

The area in the brain responsible for processing faces, located in the fusiform gyrus.

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Apperceptive Prosopagnosia

A type of prosopagnosia where individuals can't even tell if two faces are the same or different.

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Associative Prosopagnosia

A type of prosopagnosia where individuals can perceive faces, but struggle to connect them to names or memories.

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Acquired Prosopagnosia

A type of prosopagnosia caused by damage or abnormalities in the brain.

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Developmental Prosopagnosia

A type of prosopagnosia present from birth.

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Feature-by-Feature Recognition

The ability to recognize faces using clues like clothing, hair style, or voice.

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Multimodal Recognition

The ability to recognize faces using different senses, like touch or sound.

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What is Neuroimaging?

The study of brain structure and function using magnetic fields.

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What is structural MRI?

A neuroimaging technique that uses strong magnetic fields to create detailed images of brain structures.

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How does structural MRI detect different brain tissues?

Different tissues in the brain have varying amounts of protons and magnetic properties, causing them to produce different signals.

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What is fMRI?

A neuroimaging technique that measures brain activity by detecting changes in blood flow.

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How does fMRI work?

Oxygenated and deoxygenated blood have different magnetic properties, which fMRI detects to infer brain activity.

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What is the BOLD response?

The relationship between neuronal activity, blood flow, and oxygen levels in the brain.

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What is fMRI's spatial resolution?

fMRI has good spatial resolution, meaning it can pinpoint brain activity with high accuracy.

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What is fMRI's temporal resolution?

fMRI has low temporal resolution, meaning it's less accurate at measuring the precise timing of brain activity.

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Syntactic Structure

The study of how words are combined to create meaning.

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Syntactic Comprehension

The ability to understand or use the structure of sentences.

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Syntactic Production

The ability to produce grammatically correct sentences.

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Thematic Role Assignment

The ability to understand the role of each word in a sentence.

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Lexical Semantics

A branch of linguistics that studies word meanings.

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Lexicon

The mental storehouse of words and their meanings.

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Aphasia

A general term referring to disruptions or loss of language function, impacting both production and comprehension.

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Syndrome

A group of symptoms that occur together and characterize a specific disease, even if the underlying cause is not fully understood.

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Aphasic Syndrome

A disorder affecting language production and/or comprehension following brain damage, in individuals who had previously developed full language skills.

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Broca's Aphasia Speech Characteristics

Difficulty finding the right words, omitting prepositions, conjunctions, and other grammatical elements, leading to slow, effortful, non-fluent speech with simple sentence structures.

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Agrammatism

The widespread omission of function words (like articles, prepositions, and auxiliary verbs) and grammatical endings (like -ed, -ing, -s).

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Preserved Comprehension in Broca's Aphasia

The ability to understand language, even when there are difficulties in producing it.

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Insight in Broca's Aphasia

A common characteristic of Broca's aphasia, where individuals are aware of their language difficulties and understand they are not speaking correctly.

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Study Notes

Nervous System

  • The nervous system is composed of two fundamental cell types: neurons and glia.
  • Neurons transmit electrical impulses, communicating with other neurons or muscles.
  • A human brain has 100 to 150 billion neurons.
  • Glia cells support neurons; oligodendrocytes form myelin sheaths, microglia remove damaged tissue, and astrocytes regulate substance transfer between blood and brain.

Nervous Systems

  • Central Nervous System (CNS): brain and spinal cord.
  • Peripheral Nervous System (PNS): includes skeletal (voluntary muscles) and autonomic (involuntary muscles, such as heart) systems. Sensory (afferent) neurons carry signals to the brain, efferent neurons carry signals away from the brain.

Gray Matter vs White Matter

  •  Gray matter contains neuronal cell bodies (40% of brain).
  •  White matter contains bundles of axons connecting gray matter areas (60% of brain).

Organization of the Brain

  • The brain has four main regions: cerebrum, cerebellum, brainstem (hindbrain), and diencephalon.
  •  Somatosensory information travels from the body to the somatosensory cortex.
  • Motor commands travel from the motor cortex to innervate muscles.

Blood Supply

  • Cerebral arteries supply oxygenated blood to the brain.
  • Cerebral veins drain deoxygenated blood.
  • The blood-brain barrier protects the brain from harmful elements.

Cerebrospinal Fluid (CSF)

  • CSF is a clear, colorless fluid that protects the brain and spinal cord.
  • CSF circulates around the CNS, facilitating nutrient and chemical diffusion.

Decussation

  • Decussation refers to the crossing of nerve fibers in the brainstem, allowing contralateral control.

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