Important of Chapter 2

Question 1

EEG: Electroencephalogram

Answer 1

Measures brain waves; alpha waves (awake) and delta waves (sleep)

Looks at “normal” waves and stimulated waves

Question 2

PET: Positron Emission Tomography

Answer 2

Best for brain activity

Intake of radioactive glucose to highlight areas of brain in use when performing tasks

Question 3

MRI: Magnetic Resonance Imaging

Answer 3

Examines soft tissue using magnetic fields and radio waves

Shows anatomy; structure

Question 4

Functional MRI

Answer 4

Reveals blood flow; function

Question 5

CT or CAT Scan: Computed Tomography

Answer 5

3-D representation of the brain

Good for locating tumors; not function

Question 6

Aphasia

Answer 6

Impairment of language, usually caused by left hemisphere damage

Impact towards Broca’s and/or Wernicke’s area

Question 7

Plasticity

Answer 7

Brain’s ability to modify itself and reorganize following damage

The younger one is, the more function can be regained

When one sense is lost, others can compensate

Question 8

Neurogenesis

Answer 8

Formation of new neurons

Newly produced neurons in adults can apparently survive

Question 9

Left Hemisphere

Answer 9

Language, symbolic thinking, math, writing, logistics, details and literal meaning.

Question 10

Right Hemisphere

Answer 10

Facial recognition, spatial perception, overall picture, artistic creativity, and emotional expression (humor, pathos)

Question 11

Split Brain Study

Answer 11

Isolating brains by cutting corpus callosum; mostly to reduce seizures

Roger W. Sperry and Michael Gazzaniga conduct three tests of visual, tactile, and both combined.

Left: language center; can verbally describe object
Right: can comprehend vision and match object using touch and pointing, but can’t verbally describe.