Module 4 Notes

Module 4 Notes - Module 4 Notes I. Genes and Evolution a....

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
I. Genes and Evolution a. Fertilization: sperm + egg = zygote. b. Zygote: a cell formed when an egg is fertilized, 46 chromosomes, 23 pairs c. Chromosomes: short, microscopic structure that contains DNA d. Chemical alphabet: four chemicals that determine the makeup of the trillions of cells to be formed e. e.i. Gene: specific segment on the DNA that contains instructions for making proteins. Proteins are building blocks from which everything is constructed. f. Polymorphic Genes: a gene that has more than one version g. Dominant gene: will show up no matter what h. Recessive Gene: will only show up if parents share same recessive gene i. Genome: the history of all human genes j. Errors in Genetic Instructions: j.i. Fragile X Synd: large head or ears, retardation j.ii. Down Synd: extra 21 st chromosome that causes abnormal physical traits. k. Genetic Testing: examining something from someone’s body to determine if their genes will reveal any abnormalities. l. Evolution of the Human Brain l.i. Adaptations: common features of a species that provide it with improved function. II. Studying the Living Brain a. MRI: magnetic resonance imaging, passing radio frequencies through the brain. Signals interact with brain cells and creates an image. b. fMRI: functional MRI, measures changes in activity of specific neurons that are functioning during cognitive tasks. b.i. fMRI’s Map, and MRI’s shows locations, can identify brain damage. c. Brain Scans and Cognitive Neuroscience c.i. PET scan: positron tomography, injecting a slightly radioactive solution into the blood, active areas of the brain retain more solution and can help identify active parts of the brain during an activity. d. Face vs. Bodies d.i. Cognitive Neuroscience: identifies and maps differences in neural activity to understand the based for cognitive functions III. Organization of the Brain a. CNS: central nervous system made up of the brain and spinal cord b. PNS: peripheral nervous system includes all the nerves hat extend from the spinal cord and carry messages to and from various muscles, and organs in the body. b.i.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/13/2011 for the course PSYCH 201 taught by Professor Jasonwilliams during the Spring '11 term at Cal Poly.

Page1 / 5

Module 4 Notes - Module 4 Notes I. Genes and Evolution a....

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online