PSYCH 1X03 Lecture Notes - Lecture 11: Reaction Rate Constant, Extrastriate Cortex, Interposition
22 Jun 2016
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Hypothesis is that trichromats should have advantage in identifying forage and food. Took some cereal, dyed it either orange, red or green and scattered cereal around enclosure of marmosets. Individuals can detect differences in facial hue from factors such as oxygen and blood. We can make these split second decisions because we can create a mental image of a three dimensional world, based on a combination of top down and bottom up processing. If you look at your finger at arm"s length and then slowly bring it towards you while focusing on your finger. The feedback that we receive from these eye movements gives us information about depth. Convergence as a depth cue only works for objects that are relatively close because with objects that are far away, the eyes don"t have to turn in at all to fixate on the same point: path of sight for two eyes becomes parallel.
