Lecture2_W11

Lecture2_W11 - Brain Development Click to edit Master...

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Click to edit Master subtitle style Brain Development Drawing by S. Ramón Y Cajal
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Brain development: objectives 1. Appreciation for structure of mature brain 2. Development -- A highly interactive process -- Continues into late teens
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Some of the slides and images in today’s lecture were lent to me by Jesse Snedeker, at the Harvard Lab for Developmental Studies. Many thanks to her!
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1. The objective of development: the mature brain.
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Cerebral Cortex Rat Proportion of total nervous system by weight Human Development of cortex primary difference between human & other mammalian brains
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The human cerebral cortex Occipital lobe: Visual information. Parietal lobe: Spatial processing, integration of senses Frontal lobe: Planning, organizing, deciding
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A short voyage through the internal structure of the brain My point: show you the complexity of what needs to be assembled in development. Just sit back and be amazed!
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Columnar organization of V1
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The retinotopic map
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Click to edit Master subtitle style End of voyage… Back to your notebooks!
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?
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Building block: the neuron
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Two general problems Making neurons General process Getting them to the right place Hooking them up the right way 14 14
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Neurulation: making neurons Neural plate: bunch of cells in zygote that becomes brain & spinal cord At 10 weeks, neurolation starts 240,000 neurons/minute (at peak) 4,000/s All neurons born by 28th week Embryo at 10 wks Embryo at 28 wks
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This note was uploaded on 02/01/2011 for the course BIOL 273 taught by Professor Norman during the Spring '08 term at Waterloo.

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Lecture2_W11 - Brain Development Click to edit Master...

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