Evoked%20Conctractions%20Lab

Evoked%20Conctractions%20Lab - IPHY 4720 Neurophysiology...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
IPHY 4720 Neurophysiology Evoked Contractions Lab Vocabulary Ca 2+ disinhibition cross-bridge excitation-contraction coupling frequency myofilament sarcomere sarcoplasmic reticulum synaptic cleft transverse tubule vesicle Artificial Electrical Stimulation of Muscle The Grass SD9 Stimulator will be set up with the following settings: FREQUENCY - 50 Hz (black knob on 5 PPS and gray switch on x10) DURATION - 0.1 ms VOLTS - 10 V STIMULUS - regular POLARITY - normal OUTPUT - mono Fix a pair of self-adhesive electrodes on the skin over belly of the biceps brachii muscle, about one inch apart. The electrodes are then connected to the red and black output terminals of the stimulator. With the subject in a standing position, and the instrumented arm hanging in a relaxed position, the exercise involves observing how much the arm is displaced for the different levels of activation. The muscle is activated by gradually increasing the amplitude of the electrical stimulation to the maximal tolerable level. Begin with the
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

Evoked%20Conctractions%20Lab - IPHY 4720 Neurophysiology...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online