BCS 111 Lecture Notes - Lecture 5: Donald O. Hebb, Agnosia, Occipital Lobe
16 Jul 2018
School
Department
Course
Professor
Document Summary
Vision 2: cells, basic elements, things, faces, & agnosia. Interesting thing; if you stick a really really tiny electrode in this, you"ll see electical signaling down the axon, and then through the body and at the synaptic cleft. We get these things called action potentials; membrane of the cell is kept at particular voltage, depending on the activity it receives from other neurons, it has a sudden discharge that results in a spark of activity. Some stimuli inhibit, some are not enough to make the neuron fire. There"s a certain threshold; all of nothing idea. Cortical (?) columns, tens of neurons, 30-40, some with tens of thousands; long distance communication. Different neurons in the column have diff functions. Communication is not lateral, most are vertical, constant pumping from low to high/medium. Layer 4 are the neurons that input and transform info.
