Facial electromyography (fEMG) typically uses surface EMG electrodes to detect activity at the zygomaticus (cheek), orbicularis oculi (under eye), and/or corrugator supercilii (brow) muscle regions as a participant is exposed to a stimulus, such as sounds, pictures, or smells for psychophysiology or neuroscience studies.
Multiple stimulus paradigms for Startle Response applications can be set. Present a pre-defined auditory stimulus or stimulate the subject based on the result of a physiological response. Turn on lights or generate tones for detailed reaction time studies. Deliver auditory stimuli for startle response paradigms.
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This is one of many ADVANCED FEATURES for the selected Application. Scroll down for hardware options.To perform multiple stimulus paradigms for Startle Response applications, use the STM100C stimulator and the MP System Control channels. Present a pre-defined auditory stimulus or stimulate the subject based on the result of a physiological response. Turn on lights or generate tones for detailed reaction time studies. Auditory stimuli can also be used to deliver auditory stimuli for startle response paradigms.
The eye blink response is captured after the sound is delivered to the subject. Use a wired or wireless EMG amplifier and surface EMG electrodes to record facial EMG (eyeblinks); for MRI protocols, record zygomaticus activity with an MR Safe pressure pad transducer (see TSD110-MRI and Application Note 235). Set the software to integrate the signal on-line. Calculate the time and amplitude of the response using the measurement tools. Automate analysis with the Peak Detection features and display the results as a new channel.
Alternatively, the auditory stimuli can be delivered from a presentation system such as E-Prime or SuperLab and the automated stimulus analysis software can be used to calculate the latency and amplitude of the response. AcqKnowledge will convert the trigger marks from the presentation system into software events and then AcqKnowledge will use the events as part of the Stim-Response Analysis routine. AcqKnowledge can also interface with third-party stimulators including transcranial magnetic stimulation. The software also interfaces with the major presentation systems for the delivery and timing of the stimulus delivery.
Application Notes
276 – Emotional State Recognition via Physiological Measures & Processing
235 – Zygomaticus Measures with Pressure Pad vs. EMG in MRI or fMRI
BIOPAC Research Solutions | EMG
Hardware Bundles are complete solutions for the specified application. Choose your preferred platform and bundle, then click "Request Pricing" to request an estimate, add/remove items, or complete purchase. If you have questions about specific items, click through to the product web page for details and specifications, or contact your Local Sales contact.
MP36R System
Wired | Facial EMG & Startle Response
MP36R with AcqKnowledge plus SuperLab System, lead set, reusable 4 mm electrodes & gel
MP36R System
Wired | Facial EMG & Startle Response
MP36R with AcqKnowledge plus headphones to MP36R, lead set and 4 mm reusable electrodes
MP160 System
Wired | Facial EMG & Startle Response
MP160 with AcqKnowledge plus Super lab stimulus presentation system, EMG amp, 4 mm shielded TP electrode, and 4 mm unshielded TP electrode
MP160 System
Wired | Facial EMG & Startle Response
MP160 System with stimulator and headphones with EMG amplifier and disposable electrodes
MP36R System
MP36R System
MP160 System
MP160 System
MP160 System
Wireless | Facial EMG & Startle Response
MP160 System with AcqKnowledge plus BioNomadix wireless EMG amp, stimulator module and 4 mm reusable snap electrodes
BioNomadix Logger
Wireless | Facial EMG & Startle Response
BioNomadix Logger and one transmitter for wireless EMG, five Ag-AgCl snap electrodes and adhesive disks plus stimulator module
MP160 System
BioNomadix Logger
MP160 System
MRI | Facial EMG & Startle Response
Facial EMG | MP160 with AcqKnowledge plus EMG MRI amp with EL510 disposable electrode setup; includes 100 pre-wired 3-lead Ag-AgCl radio-translucent electrodes.
MP160 System
MRI | Facial EMG & Startle Response
MP160 System with stimulator and EMG amplifier with disposable electrodes for MRI
MP160 System
MP160 System
MP36R System
Animal | Facial EMG & Startle Response
MP36R with AcqKnowledge plus SuperLab System, lead set, reusable 4 mm electrodes & gel
MP36R System
Animal | Facial EMG & Startle Response
MP36R with AcqKnowledge plus headphones to MP36R, lead set and 4 mm reusable electrodes
MP36R System
MP36R System
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