01:830:313 Lecture Notes - Lecture 8: Visual Cortex, Postcentral Gyrus, Tabula Rasa
Document Summary
*** s & p in the study of methods for modifying blank slate. Common aspects of all sensory systems: sensory receptors transduce physical energy into neural energy, the different aspects of sensation are encoded by patterns of neural activity, modality - labelled lines . Intensity - by number of receptors activated: adaptation - reduction in receptor response, sensory neurons have receptive fields . Receptive field: the area of the receptor sheet that, when stimulated, makes neurons within that sensory system fire action potentials: all receptors eventually project, via a thalamic relay, to primary sensory cortex. Side/ professor notes: green: there is no thalamic relay for olfactory information, all sensory systems are characterized by both hierarchical and parallel processing, brain areas for each sensory system are characterized by topographical organization . Photoreceptors = light energy to convert to neural energy. Ganglion cell = form optic disc: action potential. Do not fire action potentials: graded potentials.
