PSYC59H3 Study Guide - Midterm Guide: Insular Cortex, Glowinthedark, Silver Nitrate
5 Feb 2018
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Document Summary
1970 1980s looks at psychology, linguistic, artificial intelligence & techniques for measuring both structure and function of brain. Santiago ramon y cajal brings staining technique call silver nitrate method . 1955 cajal"s claim: brain cells are discrete units was ultimately confirmed. Brainbow transgene fluorescent proteins derived from the dna of glow-in-the-dark jellyfish to label distinct neurons: different types of neurons can be tagged with different ranges of hues. Human brain contains nearly 100 billion neurons, connecting fibers laid end to end stretch about. Von economo-neurons focus on increasing attention; only found in only few brain regions that contribute to: emotional processing, self-awareness, social cognition; anterior cingulate and anterior insula. Passive conduction passive flow of electrical currents form dendrites to body of neuron. Active conduction recurrence of spike in the nodes of ranvier, to prevent signal from fading away. Action potential from negative to positive. Signal rejuvenation active conduction, allows impulse to traverse the entire length of axon without fading away.
