Lec 1-2

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

Answer 3

Features that make something more distinct wiouthout changing it???

e.g. add a joystick to the left makes it seem more right, or make associated colour for stim and response.

Question 4

Poffenberger paradigm

Answer 4

studies the time it takes to transfer info between 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).

Question 9

orthogonal spatial mappings

and what configuration gives fastest result

Answer 9

mapping where stimulus is 90degrees from response

e.g. vertical stim, and horizontal response (may have clockwise mapping)

both same results

Question 10

what is the dual process model how relate to compatibility

Answer 10

theory you have two systems to process info.

Fast automatic unconscious

Slow deliberate conscious

if auto process matches intentional process, they are congruent, you get to initiate an automatic response. If incongruent, must abort and reinitiate.

relates to compat because compat uses the auto making it faster, incompat must abort (incongruent)