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EOG: Eye Movement

Modular construction...extreme flexibility

MP systems offer features to support nearly every physiological recording scenario. The following advanced features apply to the application you selected.

If you don't see an Advanced Feature that interests you, please contact BIOPAC so we can identify the best solution for your particular need.

Eye Travel and Position

Determine a participant’s visual path when first exposed to a sign, advertisement, or new ergonomic layout. The X/Y display mode will track a subjects eye travel and display the exact pattern of movement. This application requires two EOG amplifiers, one for horizontal eye movements and the other for vertical. The subject remains in a fixed position […]

Nystagmus Investigation

Use AcqKnowledge to turn LEDs on and off while recording EOG to study pendular or jerky nystagmus. The software can record both the slow and fast portion of nystagmus signal. BIOPAC has solutions for both tethered and wireless recording of EOG data. To isolate both slow and fast phase nystagmus components, use the guided AcqKnowledge […]

Oculomotor Research and Visual Attention

During normal viewing conditions, a subject makes 3-5 saccades per second, separated by periods (fixations) of 200-300 ms where the eyes do not make large or fast movements. To isolate saccade-to-saccade latencies for histogram timing analysis, record the derivative (velocity) of eye movement and use the Rate Detector to calculate the latencies. Alternatively, by using the […]

Saccadic Eye Movements

Saccadic eye movement can be recorded from a seated subject reading text from a book while the subjects head remains relatively still and relaxed. As the subject tracks across the page, the eye will make larger voluntary movements, known as saccades, or fixate on a number of points in quick succession. The software lets users […]

Vestibular Function

For caloric induced nystagmus, synchronize the vestibular stimulation with the nystagmus recording to obtain precise nystagmus latency. For rotationally induced nystagmus, use the wireless BioNomadix system to record the EOG to provide a significant degree of movement .

Visual Evoked Response (VER)

To perform Visual Evoked Response (VER) and Flash Visual Evoked Potential (FVEP) studies, use the TSD122 Stroboscope and the averaging mode in AcqKnowledge. The stroboscope will trigger the MP System or the averaging software can trigger an external stimulator. An Evoked Response or Electroencephalogram Amplifier (ERS100C, EEG100C, or wireless BN-EEG2) is used to record the […]

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Basic principles of physiological data collection covers fundamentals of data collection and equipment configuration equipment to help you refine experiment protocols and avoid costly missteps. Frazer Findlay, CEO of BIOPAC, discusses common mistakes with physiology recording and shares his secrets for collecting great data. Topics include: How to prep a subject and where to place electrodes; Which type of electrodes work for different body signals; Analog to Digital Conversion; Sample rates (correct vs. incorrect); Filtering; and Scaling and calibration.
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