Center for Visual and Cognitive Neuroscience Facilities

In order to ensure the most accurate and useful results from research, the NDSU CVCN makes use of a variety of scientific instruments and laboratory equipment to effectively take measurements and perform studies in our laboratories.

Both of our 168-channel ActiveTwo EEG recording and analysis systems from BioSemi, Inc., as well as a 64-channel EEG system from Neuroscan, Inc., are used to take EEG readings during labs.
Custom-designed by Dr. Teder, these computer-controlled tactile stimulators can be used to investigate tactile perception and attention, such as the distribution of spatial attention across the fingers of the hand.
The Skalar IRIS IR Light Eye Tracker is a limbus tracker designed specifically for oculomotor research. It records the complete movements of the eye, both large and small.
The Nikon D3 features a 12.1-megapixel FX-format (23.9 x 36mm) CMOS sensor; 170-degree wide-angle viewing; Continuous shooting at up to 9 frames-per-second at full FX resolution; 51-point AF with 3D Focus Tracking.

Current Lenses:

• 50mm f/1.4G AF-S Auto Focus
• 28-300mm f/3.5-5.6G Wide Angle Telephoto Zoom
• 14mm - 24mm f/2.8G Wide-Angle Zoom
• 45mm f/2.8 Perspective Aspherical Manual Focus
• 85mm f/1.4G IF AF-S Auto Focus
The Canon EOS-1Ds is an extra high-resolution professional digital camera featuring a full-frame 35mm CMOS sensor with 11.1 million effective pixels. Current Lenses:

• Sigma 8mm 1:3.5 EX DG Fish-eye Lens
• Canon EF 16-35mm f/2.8 L USM Lens
• Canon EF 24-70mm f/2.8L USM
• Canon EF 100-400mm f4.5-5.6L IS USM Telephoto Zoom Lens
The AuSIM3D system by AuSIM, Inc. is an integrated sound measurement and delivery system. Complex 3D sound environments can be rendered in real-time based on individualized head related transfer functions; 3D soundscapes can be integrated with immersive visual VR environments to allow precise stimulus control for the study of auditory-visual multisensory integration.
Several psychophysical and EEG (Neuroscan, Inc.) laboratories are housed in Industrial Acoustic Company, Inc. anechoic chambers to ensure measurements are as accurate as possible and recorded without outside interference.
Three ViSaGe high-resolution 14-bit visual display systems (Cambridge Research Systems, Ltd.) designed for spatial and color vision research.
Two ASL Model 504 remote video eyetrackers, designed for use in situations where the stimulus presented to the subject is restricted to a single surface such as a computer or video monitor, and where head-mounted optics are not desirable. The system allows the subject approximately one square foot of head movement which eliminates the need for head restraint.
The Eyelink 1000 eye tracker is highly accurate and features a 1000Hz sampling rate.
The Minolta VIVID 9i is a high precision 3D laser scanner. Since the process of visual perception is one of reconstructing models of 3D scenes from 2D images, we use this device to measure depth relationships in actual 3D scenes.
The nVisor SX (nVis, Inc.) is a state-of-the-art head-mounted display with high resolution (1280x1024) and wide field of view (60 degrees). Camera-based optical position tracking (WorldViz, Inc.) allows the construction of virtual environments for psychophysical research.
Two ETSLindgren Four-Shield EEG recording chambers (24 Ounce Copper, 24 Gauge Silicon Steel). Each chamber measures 8' W x 10' L x 8'9" H. Magnetic Field Attenuation (60 Hz, 30 dB). Electric Field Attenuation (14 kHz, 120 dB).
DriveSafety's driving simulation system allows for practical experiments to be conducted in a realistic driving setting. DriveSafety's DS-600c (full-size, 180°, 240°, 300°)
Our EEG data transfer, analysis and storage system is based on a Dell 2850 Poweredge server and attached Dell EMC CX300 1.5TB disk storage array. Data backup is provided by a Dell Powervault 132T robotic tape library. This cluster supports applications using Grid Mathematica, Matlab distributed computing engine and Alias Mental Ray Renderer for Maya.
The BrightSide Technologies, Inc. DR-37P 37" high-dynamic range display monitor, with a peak luminance in excess of 3,000 cd/m² and a contrast ratio exceeding 200,000:1, allows vision researchers at the Center for Visual Neuroscience to present images with truly "natural" dynamics.
A custom-designed (Dr. Teder) 55-channel free-field stimulator to investigate brain responses to audio-visual signals. Speakers and LEDs at each of the 55 locations have their own microprocessor and memory and can deliver up to six sounds and 255 different light patterns via RGB LEDs. This unique computer-controlled device is an essential prerequisite to realistically simulate moving "objects" in free-field.
The Konica-Minolta luminance meter (LS-110) is a highly sensitive photometer used for measuring the luminance of light sources or reflective surfaces.
The VariSpec™ Liquid Crystal Tunable Filter (LCTF) is a high-quality interference filter, but the wavelengths of the light it transmits are electronically controllable, providing rapid, vibrationless selection of any wavelength in the visible and near-infrared tuning ranges. Mounted in front of a high-intensity light source the VariSpec serves as a monochromator; mounted in front of the Canon EOS-1Ds digital camera it allows the acquisition of hyperspectral images.
Two head-mounted high-speed video eyetrackers (Eyelink II) allow unrestricted head movement and the collection of point-of-regard data from human subjects during experiments on visual attention and perception.
Tobii X Series Eye Tracker is a stand-alone eye tracking unit to track eye movement relative to any surface. It is flexible enough to be used with TV, projectors, or real-world objects and scenes.
The VisionStation (Elumens, Inc.) is a large-format spherical projection system; the projected image subtends the entire field of view, enabling studies of very wide-range visual field interactions, as well as the study of peripheral visual processing.
A 10-channel laser point array developed by Dr. Teder to determine the gradient of spatial attention across the hands and locations in peri-personal space. It is computer controlled and uses convection-cooled laser diodes encapsulated in brass fittings.
A PR-650 SpectraColorimeter (PhotoResearch, Inc.) enables the precise calibration of visual display devices that modern research in color vision demands.