Psych 255 Perception (Final Exam) questions with correct answers

Do we perceive the world directly? (If a tree falls in the woods..) Answer No. It's qualia (products of our minds) African thinker, Ibn al Haytham (Alhazen) main contribution Answer He proposed that vision was caused when light bounced off of objects and entered the eye. Described the depth cue called 'texture gradients' Bath's main contribution Answer Pioneered treatments for blindness. Inventing a laser device for removing cataracts, Muller's main contribution Answer He proposed the doctrine of specific nerve energies: "Perception is determined by *which* nerves get simulated, not *how* they get stimulated" Lovelace's main contribution Answer Wrote the first computer program Helmholtz's main contribution Answer Measured the speed of neural transduction. Ramon y Cajal's main contribution Answer Founder of neurobiology. And taxonomy of neurons Loewi's main contribution Answer Discovered neurotransmitters