When data acquisition is configured to acquire using “Averaging”, some signal amplitude excursions may need to be excluded during the averaging process. Artifact Rejection, available via a checkbox in the averaging setup, is a feature for just this purpose.
To perform on-line averaging, first choose “MP150 > Set Up Acquisition…” (older versions of AcqKnowledge) or “MP150 > Set Up Data Acquisition…” and choose “Length/Rate” in the pane on the left (AcqKnowledge version 4.4). In the top row of pulldown menus, choose “Record” and “Save one” using “Averaging”. Underneath “Averaging”, a “Setup” button will be enabled. Click that button to set up various aspects of averaging (e.g., the number of trials) and click the “Artifact rejection” checkbox.
When artifact rejection is enabled this way, the MP150 System will ignore any trials that contain signals exceeding the artifact rejection thresholds, keep track of how many trials have been rejected, and add that number of trials to the total number of trials to be acquired. This allows users to “re-try” a trial that was rejected due to the presence of artifact.
Basic principles of physiological data collection covers fundamentals of data collection and equipment configuration equipment to help you refine experiment protocols and avoid costly missteps. Frazer Findlay, CEO of BIOPAC, discusses common mistakes with physiology recording and shares his secrets for collecting great data. Topics include: How to prep a subject and where to place electrodes; Which type of electrodes work for different body signals; Analog to Digital Conversion; Sample rates (correct vs. incorrect); Filtering; and Scaling and calibration.Watch On Demand Now!
Recent psychophysiological studies feature BIOPAC’s MP Research series of Data Recorders and AcqKnowledge software. Creating Adaptive Assistants for helicopter crews based on Real-time Physiological Data In the Mercedes S-Class, biometric tools track a driver’s eyes, heart rate, and other physiological data, with one goal in mind: Making sure drivers are alert and safe on the […]
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 […]