9 - Covert, overt attention, eye movement

Question 1

Why is FEF chosen to be a potential source of bias?

Answer 1

Programs eye movement and could be supporting for the promotor theory of attention.

Question 2

What is the premotor theory of attention?

Answer 2

You program eye movements in order to covertly pay attention

Question 3

What is evidence for FEF being the source of directing attention and bias?

Answer 3

FEF is active earlier than V4. FEF will influence V4, getting V4 to oscillate and then V4 influences FEF.

Question 4

What is the method of Gregoriou?

Answer 4

one grating stimulus appeared inside the shared RF and two others appeared outside. After delay spot at fixation changed color to match one of the three gratings - indicating the target stimulus to be attended. When target changes color - lever reaction

Question 5

What is the method of Thompson?

Answer 5

two tasks: memory-guided saccade task and covert visual search task.
MEMORY_GUIDED SACCADE - make saccade to the cued remembered location of target after fixation point disappeared.
COVERT VISUAL SEARCH - make lever towards either the location of color singleton target of the search array or move the lever towards the gap of the landolt C among distractors O

Question 6

What is the method of Gregoriou (post thompson)?

Answer 6

two tasks, detecting color change of a target stimulus presented among distractors and memory-guided saccade task