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Notes: 1. Extra Credit – Assignment 5 Due December 10 2. Last exam December 10

Notes: 1. Extra Credit – Assignment 5 Due December 10 2. Last exam December 10 Announcement and instructions on Class communication page 3. Spatial Abilities test. “ Attention and Consciousness ”. . Human Neuropsychology (486 / 686) Lecture Chapter 22. 2.

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Notes: 1. Extra Credit – Assignment 5 Due December 10 2. Last exam December 10

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  1. Notes: 1. Extra Credit – Assignment 5 Due December 10 2. Last exam December 10 Announcement and instructions on Class communication page 3. Spatial Abilities test

  2. “Attention and Consciousness” . Human Neuropsychology (486 / 686) Lecture Chapter 22 2

  3. Defining Attention and Consciousness • Attention - Selective awareness of a part of the environment - problems • Consciousness – Global awareness - levels of awareness

  4. Attention • Automatic Processing - Bottom-up - doesn’t require attention • Conscious Processing • - Top-down • - “controlled, effortful, attentive”

  5. Treisman’s Model of Feature Search

  6. Neurophysiological Evidence of Attention • Effect of attention on neuronal activation

  7. Neurophysiological Evidence of Attention • Divided Attention – Attention is a limited capacity that must be allocated • Selective Attention – Increased attention can change neuron response properties i.e. orientation tuning, firing rate

  8. Neurophysiological Evidence of Attention • Parallel processing - • Crossmodal - • - Divided attention recruits frontal cortex

  9. Functional Imaging Studies • fMRI • PET

  10. Networks of Attention • Two Attentional Systems • Posterior: • Parietal regions – Engage, Disengage and move attention from one location • Temporal Regions - Detection of features and objects • Anterior: • Frontal Lobes – activate posterior attentional systems.

  11. Inattention • InattentionalBlindness – http://www.youtube.com/watch?v=0AwwlJtnwA8 • Change Blindness http://www.youtube.com/watch?v=vBPG_OBgTWg&feature=related http://www.psych.ubc.ca/~rensink/flicker/download/ http://www.cogsci.uci.edu/~ddhoff/cb.html • Attentional Blink http://www.cs.kent.ac.uk/people/rpg/pc52/AB_Webscript/blink.html

  12. Consciousness • Varies across the lifespan and varies across the day • Evolutionarily Adaptive • Collection of processes - Arousal, Perception, Attention, Working Memory • Neural Correlates - Binding Problem • Cortical connections • Reentry and integration • Neural Synchronization

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