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MRI: Magnetic Resonance Imaging The MRI, an abbreviation for magnetic resonance imaging, uses magnetic signals to create image "slices" of the human body . - also uses radio waves. 6.2C Studying the Brain. MRI: a real brain image. Studying the Brain (cont). MRI: a real brain image
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MRI: Magnetic Resonance Imaging The MRI, an abbreviation for magnetic resonance imaging, uses magnetic signals to create image "slices" of the human body. -also uses radio waves 6.2C Studying the Brain
MRI: a real brain image Studying the Brain (cont)
MRI: a real brain image #2 Studying the Brain (cont)
B. PET scan: Positron Emission Topography Injecting radioactive solutions into blood and measuring the amount of radiation brain cells absorb. Computers then analyze the data, transforming activity level to various colors Studying the Brain (cont)
PET scan: a real brain image Studying the Brain (cont)
Computerized Axial Tomography (CT) CT- an imaging technique used to study the brain to pinpoint injuries and brain deterioration Radiation is absorbed in different amounts depending on the density of the brain tissue. Computers measure and transform into a three dimensional view of the brain.
Electroencephalograph (EEG) EEG- a machine used to record the electrical activity of large portions of the brain.
6.4 Heredity and Environment 1.) Body Build 2.) Intelligence 3.) Personality 4.) Mathematical ability 5.) Baldness 6.) Handedness 7.) Height 8.) Musical ability 9.) Longevity
Nature vs. Nurture Sir Francis Galton published Heredity Genius in 1869: after studying the families of over 1000 successful families he concluded that success ran in families and heredity was the cause. John Watson, the founder of behaviorism, wrote in 1930: Give me a dozen healthy infants, well-formed, and my own specified world to bring them up and I’ll guarantee to turn him into any specialist-doctor, lawyer, artist etc.
Heredity: the genetic transmission of characteristics from parents to their offspring. • Identical Twins: twins who come from one fertilized egg; twins having the same heredity. • Genes: the basic building blocks of heredity. • Fraternal Twins: twins who come from two different eggs fertilized by two different sperm.