This application note details hardware and software setup to synchroniize a B-Alert System with an MP150 System running on two separate computers.
Connect the 3.5 mm phone jack connector to the Analog Output (A0) port on the front of the UIM100C, and attach to the ECG input of the B-Alert Systems.
Set up the MP150 System and AcqKnowledge software as required for the experiment.
In the AcqKnowledge software on the computer for the MP150: Choose MP150 > Set Up Stimulator and set parameters
In the AcqKnowledge software on the computer for the B-Alert: Choose B-Alert > Set Up Channels and check Acquire and Plot for Analog Channel 1 (A1/EKG).
Click the Start button in the AcqKnowledgeSoftware for the B-Alert System.
IMPORTANT: You must start AcqKnowledge for the B-Alert System before starting AcqKnowledge for the MP150 system.
Click the Start button in the AcqKnowledge software for the MP150 System.
Observe the B-Alert data. A negative and positive spike*should appear. (If necessary for a better view, autoscale CH1 and hide additional channels.)
* Due to filtering applied by the EKG channel, the square wave will appear truncated in the B-Alert waveform. If desired, an AC-coupled sine wave can be used instead for a more accurate representation.
After data recording is complete, return to the beginning of the B-Alert graph where the stimulus occurred.
Highlight all data before the stimulus, and choose Edit > Clear All.
The MP150 Data is now synched to the B-Alert Data (time point ‘zero’ of the MP150 data file equals time point ‘zero’ of the B-Alert data file).
Electrodermal Activity (EDA) is an objective index for understanding emotional states. Researchers measure EDA to gain insights on psychological or physiological response, leading them down the path of scientific discovery. Because EDA is so important to research, BIOPAC has created tools to optimize event-related EDA analysis. Topics include: how to identify skin conductance responses, convert stim events from E-Prime SuperLab, Presentation, Vizard, etc., into AcqKnowledge events that can used for analysis, and score skin conductance responses using the AcqKnowledge automated EDA analysis tool.
NIRS and CNAP—Pairing great tools for great data Cerebral hemoglobin concentration (blood mass in the brain) is frequently measured in the prefrontal cortex, and systemic arterial blood pressure is known to be a variable factor based on the hemoglobin concentration. A leg pressure cuff was used to constrict and release blood flow to create a […]
BIOPAC’s just released Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines […]