Visual stimulation for fMRI

The VisualSystem is a VR goggle solution with integrated eye-tracking, used for presenting visual stimuli to a patient during their fMRI scan. By displaying sharp images and brilliant colours, the product allows the operator to easily present high-quality graphics or text to the patient.

Functional magnetic resonance imaging (fMRI) is a functional neuroimaging procedure using MRI technology that measures brain activity by detecting changes associated with blood flow.

Scientific studies indicate that the presentation of visual stimuli in fMRI experiments is more reliable with direct input through video goggles than with the use of conventional projection systems. Because the VisualSystem is placed close to the eyes, individuals are less likely to experience discomfort related to the confined space of the MRI scanner.

The design solution

VisualSystem has been designed with both patient and operator in mind. The unique design fits most head coils, and it is easy to mount with coil-specific adapters. The adjustable arm allows fast positioning at the preferred angle of view. The built- in diopter correction and fine-tuning of pupil distance are easy to regulate and customize to each patient.

The NordicNeuroLab VisualSystem features a unique optical design, enlarging images generated by OLED displays while keeping electrical components outside the head coil area. The VisualSystem is connected via a fibre-optic cable entering the magnet room through an available waveguide.

Inventas has delivered design and 3D modelling of the project with the integration of mechanics, electronics and optics. Several prototypes have been shown at international fairs, and have received good feedback in the market. Inventas has also supplied 3D visualizations for NordicNeuroLab marketing material.