CH 1

Question 1

Double Dissociation

Answer 1

Two cognitive functions are independent of each other

Question 2

Lesion method

Answer 2

Allows linking specific function to specific parts of the brain. Can’t reveal which areas critically support a given mental function. We can only do that throguh cause and effect

Question 3

Subsystems

Answer 3

Do a function that isn’t performed elsewhere in the system

Question 4

Localization of function

Answer 4

Specific regions of brain tissue that contain subsystems

Question 5

Mass Action

Answer 5

All parts of brain contribute to all functions

Question 6

X-Rays

Answer 6

Doesn’t show extent of damage to brain region but still shows region and allows determination of what is affected

Question 7

Lesion disadvanatges

Answer 7

Only show critically supporting aspect of brain that contributes to a function. Doesn’t take into account that other functions might contribute to it. Also the brain might compensate for damage in one region by another, which makes it hard to determine which is is the primary contributor

Question 8

Alpha Suppression

Answer 8

Alpha waves represent relax and rest. Reduction indicates cognitive and emotional processing engagement.

Question 9

White matter aka cortical ribbon

Answer 9

Lot of damage is often restricted to here. Could be a reason for behavior deficits. The behavior deficits are known as disconnection syndrome.

Question 10

Dichotic presentation

Answer 10

Conduction aphasia: Person’s difficulty in repeating back what has been said

Question 11

Splitbrain procedure

Answer 11

Severes primary route of right and left cerebral hemisphere interaction by cutting corpus callosum

Question 12

Hemisphere specialization aka Lateralization of function

Answer 12

Difference in processing between hemispheres

Question 13

Right hemispheres

Answer 13

Superior spatial task, can’t distinguish pitch, voice or emotional expression

Question 14

Perceptual asymmetries

Answer 14

Asymmetry in perception of information depending on sensory system part stimulated

Question 15

Corpus callosum

Answer 15

Transfers high-order info between hemispheres and enhancing overall processing capacity of the brain under highly demanding conditions

Question 16

Density

Answer 16

Cerebrospinal fluid < brain tissue < blood < bone.

Regions of brain damaged in the past are more filled with CSF. Recent hemorrhage shows white because blood is denser than brain tissue.

Question 17

PET disadvantage

Answer 17

Radioactive isotope degrades faster (short half-life)