Color and Spatial Frequency Provide Functional Signatures of Retinotopic Visual Areas.

Primate vision relies on retinotopically organized cortical parcels defined by representations of hemifield (upper vs lower visual field), eccentricity (fovea vs periphery), and area (V1, V2, V3, V4). Here we test for functional signatures of these organizing principles. We used functional magnetic resonance imaging to measure responses to gratings varying in spatial frequency, color, and saturation across retinotopically defined parcels in two macaque monkeys, and we developed a Sparse Supervised Embedding (SSE) analysis to identify stimulus features that best distinguish cortical parcels from each other.

Pediatric Head and Neck Dog Bites in the United States: A NEISS Database Investigation of Risk Factors and Escalation of Care.

Pediatric patients experience increased morbidity secondary to head and neck dog bites. The authors examined risk factors among pediatric head and neck dog bite patients and which factors are associated with admission to inform prevention efforts. All patients who suffered head and neck dog bites from 2013-2022 in the National Electronic Injury Surveillance System (NEISS) database were reviewed.

Ultrahigh contrast from a frequency-doubled chirped-pulse-amplification beamline.

This paper describes frequency-doubled operation of a high-energy chirped-pulse-amplification beamline. Efficient type-I second-harmonic generation was achieved using a 3 mm thick 320 mm aperture KDP crystal. Shots were fired at a range of energies achieving more than 100 J in a subpicosecond, 527 nm laser pulse with a power contrast of 10(14).

Overview of laser systems for the Orion facility at the AWE.

The commissioning of the Orion laser facility at the Atomic Weapons Establishment (AWE) in the UK has recently been completed. The facility is a twelve beam Nd:glass-based system for studying high energy density physics. It consists of ten frequency-tripled beam-lines operating with nanosecond pulses, synchronized with two beam-lines with subpicosecond pulses, each capable of delivering 500 J to target.