BIOPAC® Systems, Inc. Logo

No cycles found

There are several possible reasons for this. The most common is that the cursor has been positioned after the last cycle in the graph window. “Find All Cycles” does not necessarily search the entire data file. It finds cycles from the current cursor position (as set by the I-beam tool) to the end of the file. Under the “Selection” tab of the cycle detector in versions of AcqKnowledge more recent than 4.2, there is a button labeled “Move Cursor to Origin”. Clicking this button may resolve the issue. For older versions of AcqKnowledge, the user should click “OK” to close the cycle detector window without erasing any applied settings, move the cursor to the beginning of the file or select all data (typing control-a – command-a on a Mac – is an efficient way to select all data), re-open the cycle detector, and choose “Find All Cycles” again. If this does not resolve the issue, then there is likely a problem with the parameters used for searching the data file. If searching for peaks in the data, the threshold may be set too high or too low such that data never cross the threshold. Ensure also that the correct channel is being searched for peaks. If searching for events, make sure that the cycle detector is searching for event marks of a type and location that exist in the file.

Page last modified 19Jan2015

Spotlight On

Eye Tracking Glasses ETV

The ETVision (ETV) wearable unit resembles an eyeglasses frame that can be worn by itself or over the participant’s prescription eyeglasses. It contains miniature “eye cameras” that view each eye and a “scene camera” that views the scene in front of the participant, and a microphone. An optional visor can be mounted to the front […]

View All
Latest News

New Citations | Using Wireless Technology to Support Psych Research

Solving Physical Stress Issues for Surgeons Physical stress in the operating room is common for surgeons, considering how much time they spend in an upright standing position during surgical procedures. With procedures that require standing for several hours and average reported working times of 60-80 hours a week, surgeons seem to be at risk for musculoskeletal […]

New Eye Tracking Glasses Bring Real-world Data to Academic Research

BIOPAC combines eye tracking with mobile data logging and physiology data collection to run experiments in the lab or in the real world BIOPAC Systems, Inc. is pleased to announce new eye tracking integration for researchers who conduct experiments from mobile participants in diverse locations. ETVision (EYE-ETV) eye tracking glasses now integrate with BIOPAC wireless systems and software, […]

Read All
Request a Demonstration
Request a Demonstration