BIOPAC® Systems, Inc. Logo

Facial EMG & Startle Response

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 neuromarketing studies.BIOPAC fEMG electrodes

 

See More...

Details

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 AcqKnowledgewill 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.

Startle response stim response analysis dialog

Application Notes

276 – Emotional State Recognition via Physiological Measures & Processing

235 – Zygomaticus Measures with Pressure Pad vs. EMG in MRI or fMRI

Videos

BIOPAC Research Solutions | EMG

Support

Application Notes

Knowledge Base

Hardware Packages   |   Facial EMG & Startle Response

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.

Wired

Wireless

MRI

Animal

Spotlight On

Noninvasive Blood Pressure System for MRI

The NIBP-A-MRI CareTaker4 system measures relative central arterial pressure to provide continuous, noninvasive “Beat-by-Beat” Blood Pressure from at rest humans (≥ 15 kg) in the MRI; measures include Diastolic, Systolic, Mean Arterial Pressure.; heart rate (HR) data is available. The system uses the scientific method of Pulse Decomposition Analysis (“PDA”). Key features Continuous, noninvasive monitoring […]

View All
Latest News

Neuromarketing Interview | How VR Can Improve Marketing Research

Alex Dimov, BIOPAC Sales Executive, was interviewed at the Neuromarketing World Forum by Inside Marketing to discuss how virtual reality can improve marketing research. Alex explains how VR can be used to present virtual iterations of a product to save time and money, and notes that measuring physiological responses adds lots of information for product and messaging […]

BIOPAC Launches New “Smart Amplifiers”

February 14, 2019 BIOPAC Systems, Inc. Goleta, CA USA New “Smart Amplifiers” make it easier than ever for life science researchers to get great data Fast Setup & High Performance Smart Amplifiers improve performance by amplifying the physiological signal close to the subject, which allows a high-level voltage connection to the data acquisition system and reduces noise artifact. […]

Read All
Request a Demonstration
Request a Demonstration