Lecture18_Attention_S

Lecture18_Attention_S - Attention &...

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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 Huntingtons disease & Parkinsons disease: symptoms, neuropathology, treatment. 4. What distinguishes Alzheimers 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 Treismans 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) Treismans Model of Feature Search What is a Feature?What is a Feature?...
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Lecture18_Attention_S - Attention &...

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