To record a pulse waveform using the PPG100C, follow these setup and calibration details:
Plug the transducer into the amplifier but do not connect it to the subject yet.
red lead into VSUP+ portblack lead into GND portblue lead into INPUT port
Hint: Using the 3.0 Hz LP setting and the 0.5 Hz HP setting in conjunction will make it easier to find the rate of the pulse waveform (these filters can be applied in software as well).
Gain: 10 (lowest Gain option) = top position
LP: 3.0 Hz = top positionHP (first bank) : 0.5 Hz HP = top positionHP (second bank): 0.05 Hz HP = top position
Recommended acquisition sample rate: 100 Hz.
The following graphs show results of motion artifact and varying tension levels:
Well-placed sensor:
Example of motion artifact (finger):
Many studies use hand dynamometry to objectively quantify exerted effort during experiments most commonly related to the study of motivation.
We’ll focus on this topic and go over everything you need to know to record dynamometry data in the MRI or in the lab. Topics include
– Calibrating for maximum voluntary contraction (MVC)
– Real-time access to the dynamometer signal by third-party applications
– How researchers have used this equipment
– Creating a visual task that gives feedback on exerted effort as well as rewards to the participant
On Demand Playback
Discovering and understanding what motivates humans to produce better results has intrigued many researchers. Many researchers have explored the psychophysiological processes that drive our behavior. Here are some recent studies that have used BIOPAC systems to research motivation… Motivation and Pleasure Deficits Undermine the Benefits of Social Affiliation in Psychosis. Blanchard, J. J., Smith, J. […]
Eye tracking technology has come a long way and has enabled researchers to conduct mobile experiments and track participants in real world scenarios. These featured studies demonstrate some of the use cases for mobile eye tracking technology. Here are some recent studies that have used BIOPAC systems for eye tracking research… Drivers’ gaze patterns when resuming […]
Read All