1. Midterm 1 was returned in this class -mean was “a little to low” - for future, Moodle will have an Open Discussion Forum for this class to catalyze engagement and provide a means to ask questions and get feedback

2. Read this article for Friday Oct 21! Trends in Neuroscience (2000) 23, 571 - 579 Hint #1: there are at least 3 ways of getting this article Hint #2: none of them are “wait till Matt sends it to me”

3. V I S I O N S C I E N C E

4. Visual Pathways Themes to notice: –Contralateral nature of visual system –Information is organized: According to spatial location According to features and kinds of information

5. Visual Pathways Image is focused on the retina Fovea is the centre of visual field –highest acuity Peripheral retina receives periphery of visual field –lower acuity –sensitive under low light

6. Visual Pathways Retina has distinct layers

7. Visual Pathways Retina has distinct layers Photoreceptors –Rods and cones respond to different wavelengths

8. Visual Pathways Retina has distinct layers Amacrine and bipolar cells perform “early” processing –Peripheral retina features convergence of receptors onto ganglion cells –Foveal retina features divergence –Why!?