Lecture18+full+notes

Lecture18+full+notes - Slide 1 Attention &...

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Slide 1 Attention & Consciousness Readings: “Silent Land: Soul in a Bucket; Articles of Faith; The Ghost Tree (2)” “Phantoms” Ch 4 Case study RP: after returning from a trip abroad, had flu-like symptoms & persistent headache (we’ve encountered this combo in a case study before). Though the flu -like symptoms went away, the headache did not & she also noticed over a few weeks that she was having trouble recognizing faces & was unusually clumsy. After 2 years of this, she saw neuropsychologist who administered neuropsych tests & found that she had a host of visuospatial deficits: facial recognition so impaired that she could only recognize her twin sister by movement & speech, left hemineglect (contralateral neglect), constructional apraxia (e.g., couldn’t assemble a book case from Ikea), & impaired social cognition (e.g., was gullible). Imaging revealed that she had abnormally low blood flow in superior parietal regions & right temporal lobe. Cause was unknown, but suspected viral infection of some sort.
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Slide 2 Review Questions 1. What are some of the characteristic symptoms of dementia? 2. What is the difference between degenerative & non- degenerative dementia? 3. Describe Huntington’s disease & Parkinson’s disease: symptoms, neuropathology, treatment. 4. What distinguishes Alzheimer’s dementia (AD) from age - related dementia? 5. Describe some of the hallmark pathologies associated w/ AD. 6. What are the potential causes of AD? 7. List some forms of AD treatment.
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Slide 3 Attention Outline I. Introduction II. Attention I. Processing II. III. Networks IV. Mechanisms V. Inattention III. Consciousness I. Overview II. Neural correlates III. Alterations
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Slide 4 I. Attention & Consciousness What are They? Attention : selective awareness of part of environment; “mental spotlight” Can be “unconscious” (e.g., blindsight) Consciousness : awareness & awareness of awareness Does attention=consciousness? Attention is “top - down”, selecting certain stimuli (certain features of the world) Consciousness summarizes all available information (gist of whole world) No! 2 weeks ago, we talked about learning & memory. Attention is essential for both these phenomena! Central to the study of attention & consciousness is the question of how the mind & brain are related. While the middle 1/3 of this course (the lobes) really seemed to have a distinct brain-focus, this topic really gets at the intersection of mind & brain. Personally, I would say consciousness is the closest equivalent of mind, while attention bridges the gap between brain & mind. How do we decide what information is important enough to merit responding to? How do we select behaviors? These are questions that investigations of attention &
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Lecture18+full+notes - Slide 1 Attention &...

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