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AI might jeopardize the uncertainty required in science
Racial diversity in higher education is associated with higher student salaries
A soft diet attenuates exercise-induced increases in cortical bone density and formation in long bones in growing mice
Why AI cannot do good science without humans
Space- and time-agnostic imaging of subwavelength electromagnetic sources
Abstract The imaging of electromagnetic interference sources in devices is an interesting tool for electromagnetic compatibility pre-compliance testing, but it poses three significant challenges: i) the sources size is often subwavelength, meaning that the diffraction limit hinders their imaging, and the ii) spatial and iii) temporal features of the sources are uncontrolled. Indeed, in space, their spurious propagation occurs in devices with arbitrary shapes and materials; and in time, they occur either because of unintended radiation from digital or analogue signals, or because of random pulsed events such as electrostatic discharges. To overcome these issues, we i) propose to use the time reversal technique in conjunction with a resonant metalens for subwavelength imaging of these interference sources. We report the first single-shot subwavelength image of an electrostatic discharge, enabling to distinguish radiation from two PCB traces spaced 8 mm apart. ii) To achieve device (space) agnosticism, the imaging method does not require simulation of the device or its environment thanks to a combination of frequency-domain data obtained through a scanner and time-domain data radiated from the device. iii) To ensure flexibility in the source frequency band, we present a novel design for a metalens that operates in a desired frequency band within the gigahertz range, thanks to effective medium theory.
The uncritical adoption of AI in science is alarming — we urgently need guard rails
Genetics reveal why people respond differently to GLP-1 weight-loss drugs
Sea ice dynamics structure narwhal presence and seasonal movements in a Northwest Greenland fjord system
Abstract The Arctic is experiencing unprecedented environmental change, with diminishing sea ice reshaping marine ecosystems. The narwhal ( Monodon monoceros ) exhibits strong site fidelity during seasonal movements and continued sea-ice decline has the potential to alter important habitats. This study aimed to understand narwhal presence at different sea-ice stages by combining long-term passive acoustic monitoring (PAM) with satellite-derived sea ice data from Inglefield Bredning, Northwest Greenland (June 2022–September 2025). Generalized linear mixed models (GLMMs) revealed a highly significant effect of sea-ice stage on narwhal acoustic activity ( p < 0.001). Activity peaked during partial ice cover (β = 1.73 ± 0.17, p < 0.001) but declined sharply under open-water and freeze-up conditions (β = − 0.98 ± 0.19, p < 0.001). These results demonstrate that narwhal presence is closely synchronized with sea-ice timing and extent, emphasizing the marginal ice zone as a key ecological feature that narwhals exploit, likely because it provides both feeding opportunities and refuge from predators. Continued loss of seasonal sea ice is therefore expected to alter narwhal movement patterns, potentially increasing fjord residency and reducing inter-fjord movements. Such behavioural shifts could have cascading ecological effects, altering prey dynamics and reducing genetic exchange among regional narwhal groups.
Alignment between physician and patient perceptions of antidepressant treatment outcomes in routine clinical practice
Internal desynchrony of the hepatic circadian system with dissociated systemic rhythms in middle-aged mice under social jet lag-like conditions
A 2 to 16 GHz dual polarized end fire ETS array with corrugated edges for unified ECC evaluation framework
DNA-folding changes block production of self-directed antibodies
Timing-induced illusory percepts of pitch
Abstract It has long been proposed that the brain integrates pitch and timing cues during auditory perception. If true, the pitch of a sound should influence its perceived timing, and its timing should influence its perceived pitch. Previous research has found that higher-pitched sounds tend to be perceived as faster than lower-pitched sounds, and in the present study we investigated whether sounds that arrive earlier or later than expected are similarly perceived as higher or lower in pitch. In Experiment 1, participants heard isochronous, repeating standard tones followed by a pitch-shifted probe, and indicated if the pitch increased or decreased. We observed a strong biasing effect of the probe’s timing on its perceived pitch, such that later probes were more likely to be perceived as lower than the standard. Correct, bias-conforming responses to mistimed probes were also significantly faster than responses to on-beat probes. In Experiment 2, we used an adaptive difficulty procedure to investigate whether this timing-induced bias strengthens under conditions of low discriminability. We did not find evidence that bias varies with the magnitude of pitch change or with individual differences in pitch sensitivity. In conjunction with past findings of pitch-induced illusory timing changes, our results support the hypothesis that pitch and time are perceptually integrated. We discuss this integration within a Bayesian predictive coding framework, as possibly learned from real-world correlations between pitch and timing that derive from latent properties of sound sources.