practice test 1 and quizzes for test 1 Flashcards
biofeedback training for relaxation, we recommend _____.
spaced practice
Which EMG bandpass provides the highest signal-to-noise ratio?
100-200 Hz bandpass provides the highest signal-to-noise ratio since this bandpass contains the most EMG power.
_____ published early evidence that autonomic responses could be operantly conditioned, increasing the scientific credibility of biofeedback
Miller and Dicara
If your voltage is 24 and resistance is 2, current is ___ amperes.
Current is 12 amperes since voltage (24) = current (12) times resistance (2).
hat forces electrons to move in a circuit?
electromotive force
Power refers to signal _____
signal amplitude
Who proposed the concept of the General Adaptation syndrome?
Selye
Which is typically the strongest source of interference in sEMG recording?
60 Hz
Who developed Autogenic Training in Germany?
Schultz
The strongest evidence of self-regulation would be _____.
creased hand temperature during a single session when instructed without feedbac
Filter slope is specified in
dB/octave
EMG signals are changed into ______ during optical isolation.
light
Who demonstrated that human subjects can control single motor units and pioneered biofeedback-assisted physical therapy?
Basmajian
A motor unit consists of an alpha motor neuron and 80-150 ______.
extrafusal muscle fibers
theoretical model proposes that biofeedback produces nonspecific effects
placebo model
first proposed the concept of homeostasis
Bernard
During a stress interview, Roger’s heart rate increased and frontal SEMG decreased. This contradictory pattern illustrates the concept of
response fractionalism
The ______ plays a central role in homeostasis by monitoring the body and initiating adjustments.
hypothalamus
A rise in sympathetic activity could increase
sweating
In an acute stress response, the adrenal medulla releases
epinephrine and norephinephrine
Who popularized the concept of the General Adaptation Syndrome
Seyle
Which hormone does the adrenal cortex release as part of a chronic stress response
Cortisol
Which statements about stress is correct
Researchers have reported that increased illness and accidents follow increased stressful events. Scores on the Social Readjustment Rating Scale (SRRS) are only weakly (+ 0.30) associated with future illness. The SRRS assumes that major life changes equally affect individuals. Hassles better predict psychological health than major life changes
Who proposed that stress is a nonspecific response?
Seyle
Depressed individuals have a ____ times greater risk of an initial or subsequent heart attack than nondepressed individuals
4 times
A 1-second exposure to currents above ____ mA can produce ventricular fibrillation
50 mA
The recommended spacing between 0.5 cm electrodes used in SEMG recording is
1.5 cm
