Version 11-30-2016-1 FAR Part 11—Describing Agency Needs

PURCHASE DESCRIPTION

1. Statement of Need and Purpose:

To procure a stimulus presentation system for presenting visual stimuli at a high screen refresh rate (>200Hz) with precise calibration for both luminance and color, with a wide field of view, and the capability of unusual color primaries in the violet, cyan, or yellow regions. Finally, we require a projector with 4-16 primaries, instead of the standard 3-primary systems. This instrument will be used within the behavioral laboratory in the OP4 clinic for use by all investigators in the Laboratory of Brain and Cognition and their collaborators (>40 researchers) in behavioral and psychophysical experimental setups.

2. Background Information and Objective:

This request originates from the Section on Learning and Plasticity, Laboratory of Brain and Cognition at The National Institute of Mental Health (NIMH) at The National Institutes of Health (NIH). To continue to support cutting-edge research, it is essential to acquire scientific equipment that will enhance its capabilities as required by specific projects. As such, the current purchase involves acquisition of a device that can rapidly present precisely controlled visual stimuli beyond the range of what may be presented with current equipment to help to understand brain function during cognitive tasks.

3. Generic Name of Product:

high refresh rate 6-primary hyperspectral LED projector

4. Purchase Description:

• PROsix high refresh rate 6-Primary Hyperspectral LED projector or equal

• DATAPixx3 data acquisition system with DisplayPort output or equal

• Short-throw lens throw ratio of 1.56 -1.86 : 1 focus range 4.0 - 23 ft

• Rear projection screen table mount 25.5'' X 14.5''

5. Salient Characteristics

The PROsix High-Refresh-Rate 6-Primary Hyperspectral LED Projector, or equal, must provide the following essential characteristics:

• Six-primary hyperspectral LED projection capable of presenting visual stimuli using more than the standard three RGB color primaries.

• High-precision luminance and color presentation, with 10-bit calibration accuracy, to support controlled vision research.

• Ultra-high refresh rate of greater than 200 Hz to enable precise temporal presentation of visual stimuli.

• Expanded spectral/color gamut, including non-standard color primaries and the capability to support melanopsin-isolating stimulation.

• Capability to support specialized visual and retinal research involving rod photoreceptors, tetrachromatic vision, and intrinsically photosensitive retinal ganglion cells (ipRGCs).

• Capability to support 4–16 custom color primaries for specialized visual stimulation, including the isolation and study of ipRGC responses.

• Multi-primary projection technology capable of providing the spectral control required for research applications beyond conventional RGB display systems.

• Long-term manufacturer technical support for the specialized projector hardware, calibration, and associated research applications.

• Data acquisition integration capable of synchronizing experimental data collection with visual stimulus presentation.

• Rear-projection screen compatible with the projector and required experimental configuration.

• Compatible short-throw lens capable of accommodating the laboratory's required projection geometry, projection distance, and space constraints.

The system must be capable of rapidly presenting visual stimuli on a large-format screen while maintaining precise and repeatable luminance and color calibration at 10-bit precision. The system must support a refresh rate of greater than 200 Hz and maintain stable luminance, color, spectral, and temporal performance over time to ensure the accuracy and reproducibility of experimental results.

Compatibility Requirements

• Hardware compatibility: Must be compatible with existing Section on Learning and

Plasticity stimulation desktop and laptop computers.

• Software compatibility: Must support existing psychophysical experimental software and protocols coded in Python and MATLAB without requiring substantial redevelopment or modification.

• Research protocol compatibility: Must integrate with existing Section on Learning and Plasticity experimental protocols and workflows.

• Cross-platform research compatibility: Must provide stimulus presentation capabilities compatible and comparable with existing research modalities used by the Section, including fMRI and MEG experimental environments.

6. Quantity:

One advanced stimulus display system:

• PROsix high refresh rate 6-Primary Hyperspectral LED projector or equal

• DATAPixx3 data acquisition system with DisplayPort output or equal

• Short-throw lens or equal o throw ratio of 1.56 -1.86 : 1 o focus range 4.0 - 23 ft

• Rear projection screen table mount 25.5'' X 14.5''

• Shipping, Handling, and Insurance

7. Delivery Date:

The Contractor shall ship the equipment within one (1) week of receipt of the order.

8. Other Requirements:

Warranty: The Contractor shall provide a minimum 24-month hardware warranty from the date of acceptance.

Technical Support: The Contractor shall provide long-term manufacturer technical support for the specialized projector hardware, calibration, and associated research applications.