LabTutor guides physiology students though courses designed to reinforce introductory and advanced concepts in cardiovascular physiology, respiratory physiology, neurophysiology, muscle physiology, digestion, and kidney and water balance.
Empower students to measure their own biopotentials
Record and measure muscular twitch responses to nerve stimulation
Learn the positions for the standard limb leads to accurately record ECG
Learn to correctly perform blood pressure measurements
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Investigate conscious and unconscious control of biofeedback mechanisms. Manipulate a participant’s emotional state in order to alter skin temperature, heart rate and the electrodermal response. Use biofeedback to determine if conscious control is more or less effective.
Learn how to measure skin conductance. Understand how conductance, respiratory rate, heart rate and skin temperature change in response to stress. Use this information to complete a polygraph (lie detection test) and correctly interpret the results.
Record EMG during voluntary muscle contractions and investigate how contractile force changes with increasing demand. Examine the activity of antagonist muscles, see the phenomenon of coactivation and calculate nerve conduction velocity.
Record electrical activity associated with eye movements and recognize common artifacts in EOG recordings. Measure and understand the significance of angular displacement measurements and smooth tracking, and investigate aspects of gaze holding.
Become familiar with the basic psychophysiological measurements of skin conductance, respiratory rate, blood pressure, and electromyography. Combine these skills in the performance of a simple psychophysiology experiment.
Find the blind spot, test for color blindness and explore the science behind some optical illusions. Determine the distribution of touch and taste receptors, and investigate thermoception. Assess joint position sense and the perception of balance.
Learn the positions for the standard limb leads to accurately record ECG. Identify the major components of the ECG, provide estimates of the timing of ECG components and their magnitudes. Coincidentally record heart sounds and relate these to the ECG.
Measure and analyze ECG and pulse and discuss the relationship between them. Compare differences between individuals and the effects of temperature. Discover arterial anastomoses and the connections in the blood supply of the hand.
Learn correct plethysmography techniques using a sphygmomanometer and microphone or stethoscope. Apply the techniques to formulate and then test an experimental hypothesis. Customize the analysis and display of results using self-defined tables and graphs.
Utilize the finger pulse transducer and ECG and identify a correlation. Apply the techniques learned to formulate and then test an experimental hypothesis. Customize the analysis and display of results using self-defined tables and graphs.
Gain practical skills in performing electromyography examining electrical activity in the biceps and triceps muscles. Use these skills to design and test an experimental hypothesis. Customize the analysis and display of results using self-defined tables and graphs.
Introduce spirometry as a technique for recording respiratory variables. Record and analyze lung volumes and capacities, and then design an experiment to examine some aspect of respiratory air flow and volume.
Distinguish between the handling of simple and complex carbohydrates by studying how the gut handles a carbohydrate load. Measure blood glucose using a glucolet and glucometer and compare results from four different protocols.
Record and measure muscular twitch responses to nerve stimulation and observe recruitment as stimulus strength increases. Test the effect of stimulus timing on muscle contraction. Measure the decline in maximal force during a sustained contraction and examine muscle fatigue.
Record ECG, blood pressure and spirometry parameters from a healthy volunteer. Become familiar with an ECG trace and the intervals that make up the cardiac cycle. Compare recordings at rest, during exercise and immediately after exercise.
Investigate how heart rate and finger pulse change after different exercise regimes. Study the ECG trace and the electrical signals of the heart. Determine the factors that control heart rate and blood flow to tissues before, during and after exercise.
Explore the mechanism of ventilation and gas exchange at three different levels of exercise. Simultaneously record ECG and spirometry parameters then calculate the rate of metabolic energy consumption as a function of mechanical energy expenditure.
Recognize artifacts in an EEG signal caused by blinking and subject movement. Record and identify alpha and beta EEG rhythm, and analyze how a signal is affected by opening and shutting the eyes, mental activity and auditory stimulation.
Discover the responses of reflexes and reaction times to a variety of stimuli. Elicit and quantify a knee jerk reaction, trigger the pupillary light reflex and a withdrawal reflex, and measure reaction time in response to a visual cue under varying conditions.
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