to which element of affective events is the autonomic nervous system linked?
what are the other 2 elements?
affective events have a physiological, a behavioural and an affective component
> the autonomic nervous system is linked to the physiological component
where is the ANS located?
ANS: connections between
> the limbic brain
> nuclei in the brain stem and spinal chord
3 examples of laboratory conditions interesting for psychophysiological experiments
- emotionally valenced words/pictures
- fear or anger inducing tasks
- challenging cognitive tasks
> ego threat
what are 2 pathways of autonomic control of the heart?
> medulla > vagus nerve/brake > sinoatrial node (pacemaker)
> spinal chord (sympathetic chain” > muscle of left ventricle
what is “accentuated antagonism”?
accentuated antagonism: interactive effects between sympathetic and parasympathetic control
heart rate depends on what 3 factors?
heart rate depends on
- intrinsic heart rate
- sympathetic activity
- parasympathetic activity
what are differences in skin conductance in high/low arousal states?
in high arousal
- overall increase of skin conductance level
- frequency nonspecific skin conduction responses increases
- ampliture stimulus induced skin conduction responses increases
what happens to the HPV when given a pharmacological blocker of cardiac PNS activity?
how is this measured?
the HPV goes down
> measured through the pNN50
pNN50: percentage of normal-to-normal intervals deviating more than 50ms
what is “large scale ensemble averaging”?
large scale ensemble averaging:
> compare data from similar activity levels
> e.g. sitting/deskwork only, or walking/talking on the phone only
on dz/dt wave:
which points PEP?
which points LVET?
PEP: from Q to B
LVET: from B to X
what happens with heart rate during
magnitude of this effect reflects what?
inhalation: vagus brake is not applied
> heart rate accelerates
exhalation: vagus brake is applied
> heart rate decelerates
the magnitude of this effect reflects PNS activity