LEC03 PSYC06.docx

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Elizabeth Page- Gould

LEC03 PSYC06 -heart rate is measured in bpm, and peaks within the count of heartbeats in a minute are called R-Spikes -how fast is your heart beating -inner beat interval (heart period): time in msec of the interval between each heartbeat. In this one, the difference in beat between spikes is what is calculated -both increases/decreases in heart rate can be considered arousal -heart rate is affected by both sympathetic (increases heart activity) and parasympathetic (down regulates) -muscles become tense at back of neck during orienting response -Family Criminal History study -heart rate was seen as a correlate of responses to aversive stimuli, researchers interested in how crime of family members might be related to your own likelihood of committing crimes -hypothesis was that for kids whose parents were criminals and they didn’t end up becoming criminals themselves, those kids were more adverse to aversive stimuli (didn’t like stuff that had to do with criminal stimuli) -thus, 4 groups: (father criminal/ son not criminal), (father criminal/ son criminal), (father not criminal, son not criminal), and (father not criminal/son criminal) -Results were that when S-Not and F-Crim, sons were more scared of aversive stimuli -Pre Ejection Period (PEP): only pure measure of ANS w/o being invasive, it is basically the time between your heart beating electrically and when your left ventricle begins to push blood out of your body. In a more mechanical sense, it reflects the strength of your heart’s contraction -the shorter the PEP, the less time it takes for your heart to spit out blood, so your heart is pushing blood out stronger -two things required to measure PEP: you need the ECG to tell you when it starts, and the impedance, which measures the volume of blood circulating in your torso -impedance bands measures just how much blood is flowing through the areas directly underneath them (neck and torso). Always have to measure the distance between two electrodes to see the volume of the cross cylinder that we are measuring using the bands. -specific points along the impedance lines can tell you when ventricle is letting blood out, identifying the key points on the waveforms can help this -PEP is related to heart rate itself, which is to say that for intervals of heart rates, there are specific inter
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