BIOPAC® Systems, Inc. Logo

285 – Identifying Stimulation Threshold

This Application Note details various protocols for identifying a stimulation threshold for stimulation. The purpose of establishing this threshold is to ensure the subject’s comfort level and safely determine the point at which a stimulation signal becomes unpleasant, or even painful. This is accomplished by sending a series of very short stimulus pulses to the subject and gradually increasing the voltage. The subject then indicates his or her level of comfort or discomfort, and the stimulation is adjusted accordingly.

Case 1: MP150 + UIM100C + STM100C + STMISOLA (current and voltage mode) or STMISOC/D/E (voltage mode only) + LEAD110A x2 + EL509 + GEL104
Case 1a: MP160 + HLT100C + STM100C + STMISOLA or STMISOC/D/E + LEAD110A x2 + EL509 + GEL104

Case 2a: MP150 + UIM100C + STM200 + LEAD110A x2 + EL509 + GEL104
Case 2b: 3rd-party hardware and software + STM200 + LEAD110A x2 + EL509 + GEL104

Case 3: E-Prime + STMISOLA or STMISOC + LEAD110A x2 + EL509 + GEL104

Case 4: 3rd-party application + STMISOLA or [STMISOC + STM100C + IPS100C + HLT100C + INISO] + LEAD110A x2 + EL509 + GEL104

Case 5: MP150 + STM100C + STMISOC (in current mode) + LEAD110A x2 + EL509 + GEL104

Case 6: Third party equipment + STP100C + IPS100C + STM100C + STMISOC (in current mode) + LEAD110A x2 + EL509 + GEL104

Case 7: 3rd-party equipment + MP150/IPS100C + STP100C + STM100C + STMISOC (in voltage mode) or STMISOLA + LEAD110A x2 + EL509 + GEL104

Associated Applications

Spotlight On
Buy MP41 with BSL

Practical Lab Kit with BSL 4 & MP41

BSL Home enables students to safely conduct hands-on physiology labs wherever they are! Purchase this complete lab solution to preserve practical lab experience! Includes MP41 Unit+Lead Set with BSL Home software, EL503 electrodes, WRAP1 self-adhering wrap for EEG lessons, and disposable 9 V battery. For instructors—BSL Home makes it easy for instructors to continue running practical […]

View All
Latest News

New Citations | Logic Games and Meditation: the Key to Unlocking our Brains?

Studying Cognitive Activity with fNIR! The age-old game of chess is known as a thinking man’s game, where foresight, critical thinking, and strategy are required to become a good chess player, and the terms “genius” or “brilliance” are bestowed upon the chess masters of the world. As such, chess is an excellent cognitive tool to […]

Electrocardiography Guide Now Available

BIOPAC’s comprehensive Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines for extracting, […]

Read All
Request a Demonstration
Request a Demonstration