Muscle, skin eye, heart and blood pressure and mental activity, introduction to neuromodulation PP Flashcards
(64 cards)
How are measures of muscle activity in behavioral studies obtained?
EMG recordings on skin surface
What is consistent activity in the corrugator muscle found in the association with?
Unpleasant or negative stimuli
What is increased activity in the zygomatic muscle found in the association with?
Pleasant or positive stimuli
What is increased activity in the labii muscle found in the association with?
Disgust
Who are more facially reactive to affect-laden stimuli, men or women?
Women
What is used to measure the increase in skin conductance?
Galvanometer
What is the responses in skin indicators of?
Nervous system excitation
Directional fractionation refers to
When one physiological measure increases while another decreases
What is skin conduction also known as?
Electrodermal activity (EDA)
What are high levels of electrodermal activity associated with?
Successful learning, increased alertness and effort when individuals are involved in the acquisition of novel materials
Relation between skin conductance response and familiar faces
Larger SCRs occur to familiar faces compared with unfamiliar ones or in people who have brain damage that prevents them from recognizing faces
What causes pupils to dilate
Strong emotional stimulus
Will persist despite bright lights
Modern technique for pupil-measuring
Video-based pupilometer
What happens to pupil size in relation to fatigue
Decreases with fatigue
Pupil size and pain
Increases with increasing pain
Pupil size and short term memory tasks
Diameter increases as a function of number of items to be retrieved
Pupil size and long term memory tasks
Greater pupillary response than short term memory
Effort and pupil size
More effort = larger pupils
What is the process of measuring eye movements in different environmental contexts called?
Electrooculography (EOG)
What does EOG measure?
Changes in electrical potential that occurs in eye movement
What controls eye movements
Cortical and subcortical systems in conjunction with cranial nerves and eye muscles
Cerebral areas involved in eye fixation
Occipital and frontal cortices
4 types of eye movement
Saccadic movement
Smooth pursuit
Smooth compensatory
Nystagmoid
What is saccadic movement
Movements of eye from one fixation point to the next
Movement occurs quickly (10% of time spent on movement, 90% on fixation)