Lecture 4 - 2/13/12 1 slide#1 Foundations Of Mind Today:...

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Unformatted text preview: 2/13/12 1 slide#1 Foundations Of Mind Today: End of Depth Next Time: Objects slide#2 Unconscious computation : • Takes information from the environment through causal connections with the senses • The computation transforms this information. • The output is a new representation of information not given explicitly by the input. •Some important unconscious computations may be present at birth, innately speci¡ed, and not require speci¡c learning. The New view: From Descartes (&others) The idea of unconscious computations ( inferences ) Weakly electric ¡sh • Nocturnal • Can “ see ” in the dark using an electric pulse Special thanks to Ben Dirlikov for electric Fsh information slide#3 Unconscious computation : Distance from blur & contrast Weakly electric ¡sh M a x A m p l i t u d e M a x S l o p e Distance From Body = 0.5698 Max Slope ^-1.0899 Max Amplitude Special thanks to Ben Dirlikov for electric Fsh information slide#4 Unconscious computation : Distance from blur & contrast Weakly electric ¡sh M a x A m p l i t u d e M a x S l o p e Human Special thanks to Ben Dirlikov for electric Fsh information 2/13/12 2 slide#5 Unconscious computation : Distance from blur & contrast Weakly electric Fsh M a x A m p l i t u d e M a x S l o p e Human-1-0.5 0.5 1 2 4 6 8 10 Left To Right Of Image Luminance C o n t r a s t B l u r Special thanks to Ben Dirlikov for electric Fsh information slide#6 Unconscious computation : Distance from blur & contrast Weakly electric Fsh M a x A m p l i t u d e M a x S l o p e Human Special thanks to Ben Dirlikov for electric Fsh information slide#7 Unconscious computation : Distance from blur & contrast Human Special thanks to Ben Dirlikov for electric Fsh information Contrast Blur slide#8 Unconscious computation : Distance from blur & contrast Special thanks to Ben Dirlikov for electric Fsh information Contrast Blur 2/13/12 3 slide#9 Depth Perception •We experience the visual world as 3-D from information on our 2-D retina. •Mathematically, this is equivalent to forseeing the future by looking at the present. slide#10 Depth Perception How for is apple in dimension 3 (depth)? How rich is Justin in dimension 4 (time)? D E d E = distance between eyes measured in dimension X (in XYZ coordinates) d = angle of eyeball measured by strain of the eye muscle to turn the eye An “ angle ” requires two sides In order for there to be an “ angle ” of the eye there must be E AND some distance in the Z dimension (depth) that the eye has turned through Question Information Depth Future Baby = a 3 dimensional behaving object Birthday = a single point in the 4th dimension (time) The single point Birthday serves the same job as d for eyesight (it gains purchase on the unknown dimension, time in this case) Baby Birthday J$ slide#11 Depth Perception J$ How for is apple in dimension 3 (depth)?...
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This note was uploaded on 02/26/2012 for the course PSYCHOLOGY 336 taught by Professor Halberda during the Spring '11 term at Johns Hopkins.

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Lecture 4 - 2/13/12 1 slide#1 Foundations Of Mind Today:...

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