12_Attention

12_Attention - Perception - Chapter 6 Goals for today 1....

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Perception - Chapter 6 Goals for today 1. Visual Attention 2. Midterm 1
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How does attention affect our ability to perceive? 1. Is focused attention necessary for conscious perception? - Dual task paradigm (VL3): we are able to process some aspects of unattended information (e.g., faces in peripheral task) when attention is focused elsewhere (e.g., central letter task) - Inattentional blindness : when attending to some aspects of a scene, we can fail to notice other simultaneous and apparent events in the same scene - demo - Change blindness : we are often unable to detect changes in a scene occurring from one moment to another - demo
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Neuropsychology of Attention: Hemispatial Neglect 1. Deficit in attention to and awareness of one side of space (part of the body, part of visual space, part of imagined space). 2. Hemispatial neglect typically arises from damage of the right parietal hemisphere 3. The deficit is typically contralateral to the damaged hemisphere (e.g. left space) Folie 2 Right parietal lobe
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Model Patient’s copy Hemispatial Neglect
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Hemispatial Neglect Line bisection (patient: Frederico Fellini): Right visual hemifield Left visual hemifield
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Hemispatial Neglect: Patient PP (Marshall and Halligan, 1998) • I knew the word “neglect” was a sort of medical term for whatever was wrong but the word bothered me because you only neglect something that is actually there, don’t you? If it’s not there, how can you neglect it? • I think concentrating is a better word than neglect. It’s definitively concentration. If I’m walking anywhere and there’s something in my way, if I’m concentrating on what I’m doing, I will see it and avoid it. The slightest distraction and I won’t see it.
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Neuropsychology of Attention: Visual extinction (not same as hemineglect)
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This note was uploaded on 03/27/2011 for the course PSYCH V89.0022 taught by Professor Landy during the Summer '08 term at NYU.

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12_Attention - Perception - Chapter 6 Goals for today 1....

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