EDA Flashcards
Who are Fere and Tarchanoff?
First ones to nerd out over EDA (1888).
Discovered current on the skin that could run between two electrodes.
Sweat glands are innervated by sympathetic _______ neurons.
Cholinergic.
Eccrine sweat glands emerge at the ________. Apocrine glands emerge at the ________.
eccrine: skin surface
apocrine: hair follicle
Which sweat gland is more important to EDA?
Eccrine.
Relate the following sweat influences to their CNS structures. LOCOMOTION AROUSAL EMOTION TEMPERATURE
motor cortex + basal ganglia
reticular formation
limbic and hippocampal
hypothalamus
T or F: Cortical EDA effects are ipsilateral.
FALSE FALSE FALSE
Limbic EDA effects are ipsilateral.
What measures are Fere (no current needed).
SRR, SRL, SCR, SCL
What measures require no current? (Tarchanoff)
I.e. not TarchanON.
SPL, SPR.
We can either keep __ constant or ___ constant for Fere measurements.
current or voltage (Amps or mV)
Fere measurements use a __polar electrode.
BIPOLAR preferred
Potential is measured with a __polar electrode.
UNIPOLAR essential
Russia wants unilateral control over the world.
Where do bipolar electrodes go in EDA?
2nd and 3rd medial phalanges (gun gesture fingers).
Where do unipolar electrodes go?
Active electrode: Palm
Reference electrode: forearm (or abraded site)
Conductance responses are always a __ deflection.
Resistance responses are always a __ deflection.
S: positive (lumps)
Ohm: negative (dips)
What kind of response do we see with potential?
Isn’t like the other two.
mV can be BIPHASIC (down-up) or unipolar in either direction.
List five EDA conductance metrics
1 x SCL
4 x SCR
SCL change/timeSCR SCRs per unit time SCR latency SCR magnitude SCRrecovery half time/rise time
List 3 potential metrics
SPL
SPRs per unit time
SPR magnitive (pos-neg)
What are four sensitive areas when considering EDA response to a stimulus?
If you want to measure the effect of one, the others have to be controlled.
novelty
emotional content
intensity
significance
If you want to measure the effect of one, the others have to be controlled.
Fixed vs. variable signal schedules: which one showed lower phasic and tonic skin conductance?
Variable
Labile have ____
Stabiles have _____
They reckon stabiles have lower ______
Labiles: high SPRs
Stabiles: low SPRs
They reckon stabiles have lower resting sympathetic tone.
Labiles have more ___, ___ and ___ and faster reaction times.
SPR, SCR, SCL
Based on sympathetic activity - sympathetic arousal is associated with increase/decrease in SC?
Increase
T or F
Negative affective stimuli increases SCR, but positive or neutral stimuli have no effect.
True.
Shorter SCL recovery half time is associated with…
… goal orientedness AND being in the middle of a goal oriented activity.
