NROC69H3 Lecture Notes - Lecture 10: Epiphenomenon, Mnemonic, Neocortex
Document Summary
Lecture outline: neural oscillations at all levels of brain organization, single cell, local communication, regional communication, network communication, functional significance of network oscillations. Information representation: grandmother cell vs distributed coding theories, modulation of information, pathological oscillations, application to disease. Ca3 pyramidal-ca3 pyramidal cells theta oscillations: excitatory-inhibitory cell interactions, e. g. cortical pyramidal-gaba interneuron slow oscillations. Normal to abnormal network oscillation rhythms: higher frequency oscillations are confined to a smaller neuronal space (local networks, larger networks can be recruited during slow oscillations, frequency ranges are somewhat arbitrary and overlapping, see slide 12. Questions of representation: how does our brain represent an object, e. g. Green couch with red book on it: feature binding in cell assembles, problem of superimposition, slide 18, grandmother cells. Grandmother cell theory: simple cells connect to complex cells, complex cells connect to hyper complex cells and so on, until finally there is one unique cell that fires when you see your grandmother.
