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Articles 1 - 3 of 3
Full-Text Articles in Medicine and Health Sciences
Automatic And Robust Calibration Of Optical Detector Arrays For Biomedical Diffuse Optical Spectroscopy, Michael A. Mastanduno, Shudong Jiang, Roberta Diflorio-Alexander, Brian W. Pogue, Keith Paulsen
Automatic And Robust Calibration Of Optical Detector Arrays For Biomedical Diffuse Optical Spectroscopy, Michael A. Mastanduno, Shudong Jiang, Roberta Diflorio-Alexander, Brian W. Pogue, Keith Paulsen
Dartmouth Scholarship
The design and testing of a new, fully automated, calibration approach is described. The process was used to calibrate an image-guided diffuse optical spectroscopy system with 16 photomultiplier tubes (PMTs), but can be extended to any large array of optical detectors and associated imaging geometry. The design goals were accomplished by developing a routine for robust automated calibration of the multi-detector array within 45 minutes. Our process was able to characterize individual detectors to a median norm of the residuals of 0.03 V for amplitude and 4.4 degrees in phase and achieved less than 5% variation between all the detectors …
Attentive And Pre-Attentive Processes In Change Detection And Identification, Howard C. Hughes, Gideon Paul Caplovitz, Rebecca A. Loucks, Robert Fendrich
Attentive And Pre-Attentive Processes In Change Detection And Identification, Howard C. Hughes, Gideon Paul Caplovitz, Rebecca A. Loucks, Robert Fendrich
Dartmouth Scholarship
In studies of change blindness, observers often have the phenomenological impression that the blindness is overcome all at once, so that change detection, localization and identification apparently occur together. Three experiments are described that explore dissociations between these processes using a discrete trial procedure in which 2 visual frames are presented sequentially with no intervening inter-frame-interval. The results reveal that change detection and localization are essentially perfect under these conditions regardless of the number of elements in the display, which is consistent with the idea that change detection and localization are mediated by pre-attentive parallel processes. In contrast, identification accuracy …
Corneal Replication Is An Interferon Response-Independent Bottleneck For Virulence Of Herpes Simplex Virus 1 In The Absence Of Virion Host Shutoff, Tracy J. Pasieka, Vineet D. Menachery, Pamela C. Rosato, David A. Leib
Corneal Replication Is An Interferon Response-Independent Bottleneck For Virulence Of Herpes Simplex Virus 1 In The Absence Of Virion Host Shutoff, Tracy J. Pasieka, Vineet D. Menachery, Pamela C. Rosato, David A. Leib
Dartmouth Scholarship
Herpes simplex viruses lacking the virion host shutoff function (Δvhs) are avirulent and hypersensitive to type I and type II interferon (IFN). In this study, we demonstrate that even in the absence of IFN responses in AG129 (IFN-αβγR−/−) mice, Δvhs remains highly attenuated via corneal infection but is fully virulent via intracranial infection. The data demonstrate that the interferon-independent inherent replication defect of Δvhs has a significant impact upon peripheral replication and neuroinvasion.