PSYC 221 Lecture Notes - Lecture 3: Edgar Adrian, Temporal Lobe, Cognitive Neuroscience
Document Summary
Cognitive neuroscience: the study of the physiological basis of cognition. Level of analysis: refers to the idea that a topic can be studied in a number of different ways, with each approach contributing its own dimension to our understanding. Neurons: create and transmit information about what we experience and know. Nerve net: a network of continuously interconnected nerve fibers (as contrasted with neural networks, in which fibers are connected by synapses) Without staining techniques the brain networks looked continuous. Neuron doctrine: the idea that individual cells transmit signals in the nervous system, and that these cells are not continuous with other cells as proposed by nerve net theory. Cell body: is the metabolic center of the neuron; it contains mechanisms to keep the cell alive. Dendrites: branch out from the cell body, and receive signals from other neurons. Axons (nerve fibers): are usually long processes that transmit signals to other neurons.