14-Topics-PerceptionForAction

14-Topics-PerceptionForAction - Introduction to Cognitive...

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Unformatted text preview: Introduction to Cognitive Science PSYCH 1102/COGST 1101/LING 1170/ PHIL 1910/CS 1710 Topics: Perception for action Seeing a ball and catching it aren’t the same thing Outline The typical view of perception What we’ve seen of perception so far Two visual systems Seeing without seeing Perception for action An introduction to modern robotics The typical view of perception What we’ve seen of perception so far The typical view of perception When we discussed neuroscience: We saw how networks of neurons created a complex visual representation Light sensitivity (photoreceptors) Points of light (center-surround cells) Lines at angles (simple cells) Location-independent lines (complex cells) The typical view of perception When we discussed categorization: We say how simple perceptual features allow us to determine what type of object we are seeing “Object recognition” The typical view of perception When we discussed memory & learning: We say how we can use a simple network to store a representation of an event and the objects in it The typical view of perception When we discussed knowledge representation: We say how we can use our previous memories to create semantic networks and schema that allow us to do reasoning & complex decision making about objects in the world In honor of the 40 th anniversary of Sesame street an example of top-down influences on perception The typical view of perception We reconstruct a veridical three dimensional representation of the world that is available to “consciousness” Find lines & contours Find textures Find and recognize objects We reason about our model and then act based on this reasoning The typical view of perception The problem: It is slow The world changes fast! The paradox If we do vision this way, why don’t we have more accidents The typical view of perception The typical view of perception Two visual systems Seeing without seeing Two visual systems A brief tour of the visual system Retina Optic Nerve LGN Primary visual cortex And then onwards… Two visual systems - LGN...
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14-Topics-PerceptionForAction - Introduction to Cognitive...

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