Lec 2

Question 1

In the experiment with drumsticks, which had easier transfer? Contralateral mapping where sticks are crossed, or ipsilateral mapping where sticks are crossed

Answer 1

Ipsilateral

Question 2

Salient feature coding principle

Answer 2

Stim and response can be coded in terms of salient features. Translation is faster when salient features are mapped together

Question 3

Salient feature

Question 4

Poffenberger paradigm

Answer 4

studies the time it takes to transfer info btween brain hemispheres.

Left field of view respond with left hand = both processed in right hemisphere

If do Left field of view and respond with Right hand, then must cross hemispheres. Contralateral.

If cross hands and response is on left side, then respond with right hand, then is ipsilateral mapping, but still has to cross hemispheres.

Question 5

If stimulus is received on the left field of vision and right hand responds on the left side (crossed hands), is this contralateral or ipsilateral mapping?

Answer 5

Ipsilateral - because response is on left side and stim is on left side.

Question 6

describe the theories of Neuroanatomical and Cognitive coding affects on reaction time, and which one has a greater effects on reaction time with crossed hand placement.

Answer 6

Neuroanatomical - contralateral = faster, ipsilateral = take longer

Cognitive coding - contralateral = take longer, ipsilateral = take shorter

cognitive coding is responsible for spatial compatibility effects

Question 7

if have drumsticks and cross them, describe what contralateral and ipsilateral mapping would look like

Answer 7

contralateral - space being affected is on different side than visual mapping

ipsilateral - space being affected is on same side as visual mapping

(even though sticks are crossed, it focusses on where the actual effect is taking place, not on what hand does the movement)

It happens that spatial compatibility depends on the response goal, therefore ipsilateral mapping would be faster

Question 8

Does spatial compatibility depend on the response effector (limb) or the response goal (where you are pressing)?

Answer 8

the response goal.

if hold drumsticks crossed, ipsilateral will still be faster than contralateral.

To make the other statement true, contralateral would have to be faster when crossed. (meaning that it depends on where your hand is rather than where drumstick presses).