Visual System
The visual system allows presenting visual stimuli to the subject under study. It contains a lot of components which need to interact perfectly. The components are chosen with care to aim at the highest performance, flexibility and ease-of-use experience.
Components
-
MRI compatible LCD display - BOLDScreen 32 UHD (Cambridge Research Systems)
- MRI Compatible display with deterministic timing, integrated calibration and no interference with the scanner.
- User Guide
- Manufacturer Website
-
Audio-Video Switch (AVS) – AVS-HDMI2-4x4 (Black Box)
- Switching device for audio and video.
- User Guide
-
Dual head video card in the stimulus computer – NVIDIA(R) GeForce RTX(TM) 3060 Ti 8GB GDDR6 (LHR)
- Deal head video output allows to see multiple desktops simultaneously, usually one as mirror of the experiment and the other for control.
- Manufacturer Website
-
Dual monitors on the stimulus computer – Dell P2417H
- FullHD (1920x1080) resolution LCD displays.
- Manufacturer Website
-
External video input on the BOX
- Custom-built hardware interface system, see the section on BOX.
-
Rear facing mirror on the head coil
- Mirror setup mounted on the head coil to allow participants to look at the monitor.
Interface
Some components of the visual system are hardwired permanently, others components interface through BOX for easy access.
Fixed inputs
- 2 video inputs from stimPC
Fixed Outputs
- Two monitors from the stimulus PC
- LCD display in the scanner room
BOX Interface
| Port | Type | Location | Description | |
|---|---|---|---|---|
| Control Panel | IO | F | Control panel of the AVS | |
| VID/I1 | I | B | Video input from external source | |
| VID/I2 | I | B | Video input from external source | |
| VID/ETH | IO | B | Ethernet connector for control | |
| VID/SER | IO | B | Serial connector for control | 1 |
- Default: camera of LCD monitor