VREF, excitation voltage and reference voltage refer to the same concept. This is the voltage the DA100C series amplifier provides for connected transducers that need to be powered. The excitation voltage level (peak-to-peak, i.e. the absolute difference between the value for VREF- and VREF+) will influence the readings obtained from the transducer. Therefore, this voltage must be known for the purposes of calibration. The Reference Calibrator for DA100C (REFCAL) can be used. The REFCAL plugs into the DA100C and directs the reference voltage setting to the DA100C output. The REFCAL makes it very easy to adjust the reference voltage of the DA100C to suit your transducer. Alternatively, a voltmeter can be used.
StimTracker Duo. StimTracker Quad MARK. SYNC. AUDIT. StimTracker Duo and Quad autonomously detect the onset of events to avoid operating system delays. The Quad adds direct TTL output, support for vocal response onset (voice key), more light sensors, and the option to install a Raspberry Pi board. Onset of Auditory Stimuli – Pass the audio via StimTracker, set […]
Science Night at Adams Elementary (Santa Barbara, CA) encourages students to discover, play, explore and learn about the importance of science and engineering in daily life. BIOPAC set up a BioNomadix Wireless Smart Center to allow students to record their heart rate. Electrodes were placed on students and leads were connected to a wireless transmitter that sent data […]
Recent developments regarding electric stimulation and mental processing have lead to interesting developments in psychophysiology and physiological sciences. The following studies look at developments in how we potentially care for and understand solutions to issues with mental health, as well as new ways to monitor electrical stimulus on participants. The ventromedial prefrontal cortex (vmPFC) is […]