Lecture05_full

Lecture05_full - Slide 1 Slide 2 Quick Review 1. 2. 3. 4....

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Slide 2 Quick Review 1. How is the cerebral cortex organized? 2. What are each of the 4 lobes of the cerebral cortex, 3. What are the major cerebral arteries supplying blood to the brain? 4. Which arteries supply blood to each of the lobes? 5. What are the main categories of neuropsychological research methods? 6. What are the 6 main types of brain injury?
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Slide 3 Neuropsych Methods: Outline I. Neuropsych methods I. Brain injury I. Tumors II. Cerebrovascular accidents/strokes III. Infection IV. Neurotoxins V. Brain trauma II. Visualizing the brain
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Slide 4 Neuropsychological Research Methods Main categories of research methods : 1. Examine the effects of brain damage 2. Correlate brain anatomy with behavior 3. Record brain activity during behavior 4. Examine the effects of stimulating particular parts of the brain
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Slide 5 Brain Injury Six main types 1. Tumors 2. Cerebrovascular accidents (AKA strokes)/disorders 3. Infections 4. Neurotoxins 5. Closed-head injuries 6. Genetic factors
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Slide 6 Brain Tumors Tumor (“neoplasm”[i.e. new tissue]) Morbid enlargement or new growth of tissue Cell division and proliferation is uncontrolled Malignant : Progressive (i.e. keeps growing) Benign : cell growth arrested Still capable of producing neurobiological problems Brain tumors Local Metastasized (i.e. infiltrating) ~5%of all cancers are brain tumors, & they appear in ~2% of ALL autopsies; since cancer is 2 nd most frequent cause of death, this is a significant # of people affected by brain tumors! They can occur at any age but are most common in early & mid-adulthood Tumors can tell us a lot about how brain structures influence behavior because you can identify where they are growing & observe the types of behaviors that arise. E.g., a tumor in the occipital lobe would be characterized by changes in vision, while one near Broca’s area may be characterized by inability to produce speech but otherwise normal intelligence (though accounts have reported that small tumors here sometimes do not impact speech, suggesting that neuroplasticity allows for the nearby cells to take on some of this function)
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Slide 7 Infiltrating tumors Metastasis Circulation and spreading of cancer cells to locations distal to organ/tissue of origin Metastatic tumors in secondary sites are not of the same type as the infiltrated organ/tissue Growth in secondary sites upsets metabolic needs and functions of the resident cells Primary Tumor Secondary (metastatic) tumor Chest Infiltrating: take over neighboring areas of brain & destroy its tissue (the local, noninfiltrating type cause damage by taking up space)
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Slide 8 Cerebrovascular Accidents Cerebral Accident Sudden damage due to disruption of cerebrovascular system Stroke Sudden reduction or loss of Consciousness Sensation Voluntary movement Types of Stroke: Ischemic: blockade of brain artery (or
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This note was uploaded on 11/05/2011 for the course 830 310 taught by Professor Joannehash-converse during the Spring '11 term at Rutgers.

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Lecture05_full - Slide 1 Slide 2 Quick Review 1. 2. 3. 4....

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