For ultramicroscopy, we used the standard setup described [15 (link)] (Fig 1 ). Fluorescence excitation of the methoxy-X04 labeled amyloid plaques was done with a 405 nm, 180 mW diode laser (Newport, CA, USA). The excitation light was blocked by an optical lowpass filter with a cutoff of 455 nm (AF-Analysentechnik, Germany). Image recording was performed using Olympus XL Fluor objectives (2x: N.A. 0.14; 4x: N.A. 0.28) and a 12 bit CCD camera with 2048 * 2048 pixels resolution (Cool Snap K4, Roper Scientific, Germany). For visualizing the entire brain a 0.63 x post-demagnification was combined with the 2x-objective. 3D image reconstruction was performed via Amira 5.2 (Visage Imaging Germany). For image processing a computer system with two Opteron Dual Core processors and an NVIDIA Quadro FX5800 graphic processor board with 4 GB frame buffer size (NVIDIA, USA) was utilized.
Quadro fx5800
Manufactured by NVIDIA
Sourced in United States
The Quadro FX5800 is a professional-grade graphics processing unit (GPU) designed for high-performance computing and visualization applications. It features 240 CUDA cores, 4GB of GDDR3 memory, and a 256-bit memory interface, providing a balance of computational power and memory bandwidth to support advanced graphics and compute-intensive workloads.
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Lab products found in correlation
2 protocols using quadro fx5800
1
Ultramicroscopy of Amyloid Plaques
2
Stereoscopic Visual Perception Simulation
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To develop the simulator, we used a 19-inch CRT monitor (39.5 Â 29.6 cm, 800 Â 600 pixels, Mitsubishi Diamondtron M2 RDF223G) that was refreshed at 120 Hz, stereo shutter goggles (Crystal Eyes 3, StereoGraphics), and a personal computer (DELL, Inc., Precision T7400, 3.2-GHz CPU, 3.25-GB RAM, graphics card: NVIDIA Quadro FX 5800). Subjects observed stimuli presented by the CRT through the goggles (Fig. 4). To minimize real crosstalk between the images presented to their eyes, we used only red phosphor on the monitor, which was comparatively faster. The minimum and maximum luminances measured through the stereo goggles were less than 0.001 cd/m 2 and 1.99 cd/m 2 , respectively.
The viewing distance was 160 cm, at which theoretically, the pixel structure cannot be distinguished by a person with a visual acuity of 1.0. This way of determining the viewing distance was used for the standard viewing distance of HDTV screens [75] , [76] .
We used an infrared (IR) position sensor (Optotrak 3020 System, Northern Digital) to track the subject's head position during the experiment. An IR emitter was attached to the goggles. The sensor collected the head-position data every 10 ms, resulting in no awareness of the latency of the image presentation based on the head motion.
The viewing distance was 160 cm, at which theoretically, the pixel structure cannot be distinguished by a person with a visual acuity of 1.0. This way of determining the viewing distance was used for the standard viewing distance of HDTV screens [75] , [76] .
We used an infrared (IR) position sensor (Optotrak 3020 System, Northern Digital) to track the subject's head position during the experiment. An IR emitter was attached to the goggles. The sensor collected the head-position data every 10 ms, resulting in no awareness of the latency of the image presentation based on the head motion.
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