BIOPAC® Systems, Inc. Logo

Stimulus Presentation Event Marking

AcqKnowledge digital stim to events feature

AcqKnowledge® includes a fully automated event driven data reduction program for Event Related Potential and other stimulus-response (S-R) applications.

The feature comprises of two tools: Digital input to stim events and  Stim-response analysis.

The Digital input to stim events function works with TTL trigger information coming from applications such as E-Prime®, SuperLab®, DirectRT®, MediaLab®, Inquisit®, Vizard®, and Presentation®. It converts TTL data acquired on the digital channels of an MP device into stimulus events. Stimulus delivery events are defined in the graph for each low to high transition of the digital data, the indications of stimulus delivery. The digital channels are interpreted as a binary number. Each stimulus event is placed in the global event bar above the channels of data and has the corresponding stmulus type number included with its label. This allows further analysis to distinguish

See More...

Details

This is one of many ADVANCED FEATURES for the selected Application. Scroll down for hardware options.

between different types of stimulus events by using the cycle detector’s label matching capability. The stim events program is useful when you have many different types of stimulus event groups, but a limited number of digital lines. By sending combinations of TTL pulses to the digital I/O lines of the MP device, the program identifies and classifies them.
Stimulus, Response, Analysis, Event Marking

The Stim-response analysis part of the program identifies the stimulus events as they randomly appear in the data and automatically measures, or averages the response to the stimulus. The software allows the user to pick a time window around the stimulus event for measuring the data. It also allows you to select the measurements that you wish to take. The measurements results can be pasted to a Journal file or automatically exported to Excel.

 

Videos

BIOPAC Research Solutions | EEG

Integrating BIOPAC Research Systems | Data Acquisition & Analysis

Support

Application Notes

Knowledge Base

Hardware Packages   |   Stimulus Presentation Event Marking

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

Spotlight On
free BIOPAC webinar

Optimize Event-Related EDA

Electrodermal Activity (EDA) is an objective index for understanding emotional states. Researchers measure EDA to gain insights on psychological or physiological response, leading them down the path of scientific discovery. Because EDA is so important to research, BIOPAC has created tools to optimize event-related EDA analysis. Topics include: how to identify skin conductance responses, convert stim events from E-Prime SuperLab, Presentation, Vizard, etc., into AcqKnowledge events that can used for analysis, and score skin conductance responses using the AcqKnowledge automated EDA analysis tool.

Register Now
Latest News

New Citations | BIOPAC in NIBP Studies

NIRS and CNAP—Pairing great tools for great data Cerebral hemoglobin concentration (blood mass in the brain) is frequently measured in the prefrontal cortex, and systemic arterial blood pressure is known to be a variable factor based on the hemoglobin concentration. A leg pressure cuff was used to constrict and release blood flow to create a […]

Electrocardiography Guide Now Available

BIOPAC’s just released 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 […]

Read All
Request a Demonstration
Request a Demonstration