PSYCH 101 Lecture Notes - Lecture 10: Detection Theory, Absolute Threshold, Sensory Neuron
Document Summary
Vision: the process of how visual stimuli reaches our brain outside world are collected and subsequently filtered through. Sensory receptors in the eye and the relay of visual information. Light first enters the cornea, then the lens, and finally the retina, which is the thin inner surface on the back of the eyeball, and the only part of the brian that is visible from outside the skull. Rods respond to relatively low levels of light and are responsible for night vision. Cones respond to higher levels of light and generally see both color and detail. Cone cells are densely packed in a region known as the fovea. After light is transduced by the rods and cones, signals are sent to ganglion cells, which are the first neurons to generate actions potentials. Ganglion cells send signals from their axons to the thalamus; the bundle of their axons is the optic nerve.
