Vortex-Bessel beam generation by 3D direct printing of an integrated multi-optical element on a fiber tip.

Shaping light beams as they propagate out of the tips of optical fibers is a desired ability, as the light could be tailored for various applications in a miniaturized, integrated, and cost-effective manner. However, fabricating sophisticated refractive elements directly onto fibers is challenging. By using 3D-direct laser writing (3D-DLW), high-quality optical devices could be fabricated directly on top of the fiber's facet by the two-photon absorption process.

Asymmetric dopamine loss differentially affects effort to maximize gain or minimize loss.

Background: Dopamine (DA) plays an important role in regulating effort expenditure for reward, but whether it is also involved in modulating effort to avoid punishment is not clear. Preference for approach towards rewarding stimuli or away from aversive stimuli is associated with asymmetric activation in anterior brain regions. Asymmetric DA signaling in subcortical-frontal circuits may therefore contribute to differentially energizing behavior towards approach or avoidance behavior.

Crosswind sensing from optical-turbulence-induced fluctuations measured by a video camera.

We present a novel method for remote sensing of crosswind using a passive imaging device, such as a video recorder. The method is based on spatial and temporal correlations of the intensity fluctuations of a naturally illuminated scene induced by atmospheric turbulence. Adaptable spatial filtering, taking into account variations of the dominant spatial scales of the turbulence (due to changes in meteorological conditions, such as turbulence strength, or imaging device performance, such as frame rate or spatial resolution), is incorporated into this method.

The thin line between reality and imagination: attachment orientations and the effects of relationship threats on sexual fantasies.

The authors examined the effects of relationship threats on sexual fantasies. In two studies, participants described a sexual fantasy following an imagination task and reported their attachment orientations. In Study 1, participants imagined relationship or nonrelationship threat scenes.

Neuropsychiatric and cognitive features in autosomal-recessive early parkinsonism due to PINK1 mutations.

Autosomal-recessive early-onset Parkinsonism (AREP) due to PINK1 mutations is characterized by an early-onset, slowly progressive disease, with a good response to levodopa. Psychiatric and cognitive disturbances associated with AREP have rarely been reported in the literature. We describe 2 brothers from a Jewish-Iraqi consanguineous family with a homozygous PINK1 nonsense mutation.