This application note is concerned with the recording of Zygomaticus measures using a pressure pad transducer vs. EMG electrodes during MRI or fMRI investigations. With some MRI protocols, especially those with extensive and rapid gradient switching cycles, it has proven helpful to employ indirect methods of recording facial EMG activity to better isolate periods of activity. BIOPAC has successfully employed a pressure pad transducer to record minute changes in muscle contraction simultaneously with EMG, such as on the Zygomaticus, to obtain a measure of smiling.
The following BIOPAC products were used for this measurement:
MP150WSW data acquisition system with AcqKnowledge
EMG100C electromyogram amplifier module
LEAD110S shielded leads (x2) and LEAD110 lead
EL254S 4 mm Ag-AgCl recording electrodes
Optional MEC110C module extension cable (C-series amplifier to Touchproof)
DA100C general-purpose transducer amplifier
TSD110-MRI pressure pad transducer—consists of TSD160A differential pressure transducer, RX110 sensor, and AFT30-XL tubing.
Join BIOPAC and Argus Science for a personal look at new Eye Tracking technology for Mobile and Screen-Based Participants. Learn how to utilize ETAnalysis StimTrac combining different types of eye tracking functionality into one tool.
Frazer Findlay from BIOPAC and Robert Wilson from Argus Science will review experiment setup and new safety protocols on how to record Eye Tracking while keeping safe from COVID-19.
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Smelling your Emotional State Our sense of smell delivers important information to our brains, such as whether or not food is bad, or reminding us of a pleasant memory (crisp, fall air, anyone?). This fMRI-based study recorded PPG using a Photoplethysmograph Transducer for MRI connected to a PPG100C-MRI Amplifier. A differential pressure transducer continuously recorded variations in […]