Physiological Signal Processing Laboratory for Biomedical Engineering Education

Abstract

The proposed Physiological Signal Processing Laboratory incorporates important new concepts to further its utility as a vehicle for biomedical engineering educational use. The Laboratory incorporates the physical construction, testing and analysis of eight signal processing circuit modules, introduced as lessons. Each module can be characterized through measurement with a BIOPAC MP35 data acquisition system and a student-built square wave generator. The modules are combined sequentially to create a sophisticated and functional electrocardiogram (ECG) amplification and processing system. By the final lesson, the completed ECG signal processor will provide meaningful outputs from signals sourced from the student's own body. Through the application of a single, easy-to-use data acquisition system and associated software to a breadboard circuitry laboratory, students can build, test and analyze signal processing modules, verify their performance against mathematical simulation using graphical comparisons, combine modules, collect physiological signals sourced from their own bodies, and evaluate the results. By developing the complete ECG signal processor, module by module (as eight lessons), students develop an understanding of system design and development methodologies. In addition, when collecting data directly from their own bodies, students' curiosity is stimulated to create an environment more amenable to inquiry-based learning.

Comparative Study on Does Energy Drink Effect on the Reaction Time?

“…Red bull consists of 40mg Caffeine in it. Caffeine [8], is a naturally-occurring, bitter, white, crystalline alkaloid. Adenosine is another alkaloid builds up in the brain throughout the day, which makes us feel tired when it get binds at adenosine receptors [9].…”

“…The data for reaction time test was collected from the subjects using the BIOPAC® Systems Inc. (USA) MP36 windows acquisition unit [8]. To provide anti-aliasing for the digital IIR filters and to reduce high frequency noise it employs an approximately 20KHz Low Pass Filter.…”

Comparing EndoPAT and BIOPAC measurement of vascular responses to mental stress

“…Arterial blood pressure in the control arm was measured using the oscillometric or auscultatory (Korotkoff sounds) plethysmographic technique with a TSD120 pressure transducer connected the computerized MP150‐BIOPAC data acquisition system via to a DA100C amplifier (BIOPAC Systems, Goleta, CA, USA) 9–11. The cuff was inflated to and held at 70 mmHg pressure to prevent venous pooling, thus avoiding veno‐arteriolar reflex vasoconstriction.…”

“…Arterial blood pressure in the control arm was measured using the oscillometric or auscultatory (Korotkoff sounds) plethysmographic technique with a TSD120 pressure transducer connected the computerized MP150-BIOPAC data acquisition system via to a DA100C amplifier (BIOPAC Systems, Goleta, CA, USA). [9][10][11] The cuff was inflated to and held at 70 mmHg pressure to prevent venous pooling, thus avoiding veno-arteriolar reflex vasoconstriction. Pulsatile volume changes of the brachial artery induce a pressure alteration in the cuff, which is sensed by the pressure transducer, and then transmitted, amplified and recorded by the BIOPAC acquisition system.…”