SCR and HR Flashcards
SCR study
Sympathetic system activates the endocrine sweat glands in the hand. To measure, electrodes are placed on the hands/fingers.
Moisture of sweat disbalances the ions, making it a better conducter. Thereby allowing measurement of skin conductance. SCR is activated by sympathetic system, and is usually refered to as galvanic skin response
Subliminal suppression
SCR goes up strongly in phobia. Even when you don’t consciously report seeing a snake, the SCR is visible.
Heart Rate
Both the para and the sympathetic system control HR
Para; Vagus nerve
- Deceleration, caused by acetylcholine
Sympathetic Cardiac nerves
- Acceleration, norepinephrine
Activation pattern differs depending on emotion
Defense cascade
This describes the defensive response according to the distance of a threat.
Threat detection in the presence of a more distal threat is ass w vigilant freazing (para system decreases HR; fear bradycardia)
Priximal threat activates the sympathetic, heart rate increase (fight/flight)
Not all physiological responses go in similar pattern. SCR increases early,
HR variability
Variability in HR (time btw beats) is ass with better well-being.
We respond diff to loved ones compared to unknown