9 - Psychophysiological Measurements Flashcards
What are the three ways we can measure emotional responses in the lab?
Evaluative reports, overt actions, and physiological responses
Which neurotransmitter does the sympathetic nervous system use at the postganglionic synpapses?
Norepinephrine
Which neurotransmitter does the parasympathetic nervous system use at the postganglionic synapses?
Acetylcholine
Which system is faster, the sympathetic or the parasympathetic?
Parasympathetic nervous system is faster
What is the natural pacemaker of the heart?
SA node
What is the electrical gateway to the ventricals in the heart?
AV node
When does the SA node fire and which wave represents this in the ECG?
When the atria are full of blood, represented by the P wave
When does the AV node fire?
During the QRS complex
What is systole and when does it occur in the ECG?
Systole is ventricular contraction and it occurs immediately after the QRS complex, before the ventricular repolarization at the T wave
Which node does the parasympathetic nervous system control heart rate through?
SA node
Which node does the sympathetic nervous system control heart beat strength through?
VA node
What is blood pressure?
The force exerted by the blood against the vessel walls (mmHg)
What are baroreceptors?
Sensors in the heart that detect variations in blood pressure and signal to the brain the current state of cardiovascular arousal
What are the signals from aortic baroreceptors conveyed to the brain by?
Vagus nerve
What are the signals from carotid baroreceptors conveyed by?
Glossopharyngeal nerve
What is the most important and rapid short-term regulator of blood pressure and cardiovascular arousal?
Baroreceptors
What is the exosomatic method of measuring electrodermal activity?
Applying small electrical current across the skin to measure skin conductance levels
What is the endosomatic method of measuring electrodermal activity
record skin potential without applying external electrical current
What innervates eccrine sweat glands (palms and fingers)?
Predominantly sympathetic acetylcholine innervation
Sadness is associated with smaller or larger pupils?
Snaller
What is the corrugator supercilli?
Muscle that draws the eyebrow downwards
What is the zygomaticus major?
Muscle that tightens the cheek
What is the orbicularis oculi?
Muscle that closes the eyelid
