2. Two sides

Question 1

lateralization

Answer 1

refers to how cognitive processes (neural functions) are more dominant on one side of the brain than the other.

Question 2

functions of left hemisphere of brain

Answer 2

• controls right side of body
• logic tasks (the big picture)
• science and mathematics
• large muscle movements like walking
• balance
• nonverbal communication
• smell
• sound
• taste
  regulating avoidance behaviors
• involuntary bodily functions

Question 3

functions of right hemisphere of brain

Answer 3

• controls left side of body
• creativity and arts
• ## comprehending emotional stimuli (damage can cause one to not get sarcasm or humor)

Question 4

what is in both sides of the brain

Answer 4

• the limbic system (includes amygdala and hippocampus)
• responsible for emotions and memory
• facial muscles
• taste

Question 5

what are the three theories of the evolution of cerebral lateralization?

Answer 5

analytic-synthetic theory
motor theory
linguistic theory

Question 6

analytic-synthetic theory

Answer 6

posits the idea that there are two modes of thinking, the synthetic and the analytic, which have become separated through evolution into specialized activities located in the right brain and left brain respectively.

Left hemisphere - logical and analysis and details
Right hemisphere - synthesis, processing information and overall patterns
Limitation - very vague and limited to a degree (hard to empirically test)
Example - driving = holistic view from right hemisphere but left hemisphere has detailed view for safety if something goes wrong

Question 7

motor theory

Answer 7

left hemisphere is specialized specifically more for the control of fine movements and not for the control of speech, although speech is only one of many category controlled by the left hemisphere.

Question 8

linguistic theory

Answer 8

major role of the left hemisphere is language because of the left hemisphere’s crucial specialization for analytic thought and skilled motor activity.

Question 9

difference between split brain and brain lateralization?

Answer 9

split brain: brain function independent than other

lateralization: dominant function on hemispheres

Question 10

split brain

Answer 10

Each hemisphere functions independently with some connections to each other but not the full connections

Question 11

brain lateralization

Answer 11

Lateralization of the brain hemispheres refers to a functional dominance of one hemisphere over the other, in which one is more responsible or entirely responsible for control of a function in comparison to the other.

Question 12

callosotomy

Answer 12

corpus callosum is cut through in an effort to limit the spread of epileptic activity between the two halves of the brain.

Question 13

corpus callosum

Answer 13

brain hemispheres mirror each other but need each other to function
ex: typing with both hands, brain gotta know what key each hand pressed so together they form a word

Question 14

effects/consequences of callosotomy

Answer 14

• Still function normally but difficulty to learn new motor tasks
• Hemispheres act like two different brains so different tasks with each hand can be done simultaneously
• Simple/fast tasks can be more efficient because 2 independent searches/functioning,
• but harder tasks are much harder

Question 15

gazzaniga

Answer 15

Epileptic split brain outcomes:

• Right and left side of a screen showed images
• Right side could see but left side could not see
• If two images on both sides - could draw images from both sides even if reported not seeing the left side
• can see left side but no connection to left hemisphere to be able to say what he saw

Question 16

split brain joe video experiment method

Answer 16

They put info into his disconnected mute right hemisphere and watch it do behaviors
Look at focal point then showed words or picture on right or left side → when he focuses everything to the right of the point goes to the left side of his brain which is the dominant hemisphere for language and speech. → when shown on left he cannot name it but his left hand can draw it