A band pass filter allows the energy concentrated between two given frequencies (X and Y) to pass while it attenuates the signal's energy at other frequencies. It is equivalent to applying a high-pass filter at X and a low pass filter at Y.
A band stop filter attenuates the energy in the frequencies between two given frequencies (X and Y). It is equivalent to applying a low pass
filter at X and a high pass filter at Y.
Note that filters do not remove all of the energy outside of their pass band (the pass band is the frequencies between X and Y for a band pass filter, and below X and above Y for a band stop filter). Generally, the further away from the cut off frequencies (X and Y), the greater the attenuation of the energy. How fast the attenuation increases as a function of frequency is established by parameters (primarily “Q”) of the filter. Real filters will also attenuate within the pass band, and there are some tradeoffs in the selection of parameters.
This Mobita wearable physiological signal amplifier system records 32 channels of high-fidelity wireless EEG data with water electrodes. The system includes: Mobita base unit with onboard 3D accelerometer & trigger channel ConfiCap™ configured for 32-Channel EEG Headcap with 32 grommets for Water Based Electrodes Water Based Electrodes AcqKnowledge software This Mobita® System is uniquely suited to record wireless EEG for a variety of applications, such as […]
Hardware and software packages from BIOPAC allow commercial consumer marketing teams to easily combine precise eye tracking data with physiological data recording. Here are a few notable studies recording physiology with eye tracking data: Predicting Advertising Success: While neurophysiological methods have become increasingly popular to better understand marketing phenomena among academics and practitioners, the success of […]
BIOPAC ECG solutions have been used in several research studies, including many that pertain to consumer behavior or neuromarketing. We have collected a few notable articles recording ECG in consumer research: Impact of Malevolent Business Practices: With information on potentially suspect business practices more widely available than ever, it is important to understand what this […]