Lecture18_Attention_S

Lecture18_Attention_S - Attention& Consciousness...

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Unformatted text preview: Attention & Consciousness Readings: “Silent Land: Soul in a Bucket; Articles of Faith; The Ghost Tree (2)” “Phantoms” Ch 4 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. Attention Outline I. Introduction II. Attention I. Processing II. Neurophysiological & imaging evidence III. Networks IV. Mechanisms V. Inattention III. Consciousness I. Overview II. Neural correlates III. Alterations 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! II. Attention • Automatic vs conscious processes • Automatic: – direct behavior involuntarily – without conscious awareness – bottom-up • Conscious: – requires directed attention – top-down II.I Automatic vs Conscious Processing • Treisman’s visual processing task • Feature search : look only for specific feature; relatively automatic; innate to visual system • Serial search : scanning from 1 object to the next – Conjunction search : searching for particular combinations of stimuli (e.g., line weight & form) Treisman’s Model of Feature Search What is a “Feature”?What is a “Feature”?...
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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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Lecture18_Attention_S - Attention& Consciousness...

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