Chapter 8 Flashcards
Electrocardiography (ECG/EKG)
measure of heart rate
Blood Pressure
How hard blood is flowing through your body
Systolic Pressure
the peak amount of pressure during heart contraction
Diastolic Pressure
pressure maintained between heart beats
Plesthysmography
measure blood volume
Penile Plesthysmography
a machine for measuring changes in the circumference of the penis
Phallometry
measurement of blood flow to the penis
Vaginal Photoplethysmography
Measurement of clitoral blood flow
uses for cardio measures
mental workout, fatigue, stress, polygraph, sexual arousal
Heart Rate
he number of heartbeats per unit of time. Usually heart rate is expressed as beats per minute
Heart Rate variability
consistency of time between heart beats, duration of interest interval
Measuring Respiration and uses
Measure breathing often used with cardio measures measuring workload
Respiratory Sinus Arrhythmia (RSA)
naturally occurring variations in heart rate that occur during breathing cycle
Skin Conductance Response
use of the skin to conduct electricity which is based on physiological arousal
uses for EDR
- biofeedback for treating stress and anxiety
- measures stress and workload
- polygraph test
biofeedback
technique that trains people to improve their health by controlling certain bodily processes that normally happen involuntarily, such as heart rate, blood pressure, muscle tension, and skin temperature.
Electromyography (EMG)
procedure for measuring muscle tension
uses for EMG
- look at indications of stress
- diagnostics of injury
- measure muscle fatigue
neuropathy
disease or dysfunction of one or more peripheral nerves typically causing numbness or weakness
myopathy
a disease of muscle tissue
Pupillometry
measuring pupil diameter
- cannot be consciously controlled
- neurological evaluation
- drug testing
Pupil reactivity under influence of drugs vs. clean
Pupils are dilated when on drugs
Electrooculography (EOG)
Measures eye movement
Uses: -the filter eye movement artifacts from deg
evaluation of vestibular (balance) disorders
eye trackers
biofeedback
Electroencephalography (EEG)
provides a gross measure if the electrical activity/signals of the brain (overall general activity in a cortex)
Prepping EEG
separate hair and place electrodes on hair follicles
10-20 System of Electrode Placement
the physical measurements for placing electrodes
Nasion
the intersection of the frontal bone and two nasal bones of the human skull
Inion
the projecting part of the occipital bone at the base of the skull.
Uses of EEG
rules out disorders such asseizure disorders, including epilepsy
head injury
encephalitis, or inflammation of the brain
brain tumor
encephalopathy, or brain dysfunction resulting from various causes
memory problems
stroke
sleep disorders
Pros and Cons of EEG
Pros: Good temporal resolution (activity with millisecond precision)
Cons: Poor spatial resolution (identifying where the activity is coming fron on/in the brain is not very precise)
Causes of Artifacts
many things
Magnetoencephalography (MEG)
a non-invasive technique for investigating human brain activity. It allows the measurement of ongoing brain activity on a millisecond-by-millisecond basis, and it shows where in the brain activity is produced.
