Researchers have finished equipping the Subaru Telescope with a new special “compound eye,” culminating several years of effort. This new eye is an instrument featuring approximately 2,400 prisms scattered across the extremely wide field of view available at the Subaru Telescope’s primary focus, allowing for simultaneous spectroscopic observation of thousands of celestial objects. This unrivaled capability will help researchers precisely understand the formation and evolution of galaxies and the Universe. Among 8-meter-class telescopes, the Subaru Telescope is the most competitive with the largest survey capability in the world. This instrument, the Prime Focus Spectrograph (PFS), will be ready to begin scientific operations in February 2025.

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A research team consisting of the Cognitive Neurotechnology Unit and the Visual Perception & Cognition Lab of the Department of Computer Science and Engineering, Toyohashi University of Technology, showed that certain combinations of facial expressions and facial colors increased the event-related potential P3. The human brain emits weak electrical signals (electroencephalogram, EEG), and the event-related potential P3 is a positive amplitude potential that reflects selective attention and is observed in the EEG around the parietal and center at 300–500 ms after stimulus perception. This study showed that the P3 amplitudes for red angry faces are higher than those for red neutral faces, and that the relationship between facial expression and facial color, that is, an angry face and red, changed brain activity reflecting selective attention. The results of this study were published online in the journal eNeuro on January 10, 2025.https://doi.org/10.1523/ENEURO.0419-24.2024

Intercultural communication is vital in today’s growing and connected world. However, differences in cultural and linguistic practices often result in miscommunication. Emphasizing the relevance of culture in informal communication, Professor Stadler from Doshisha University explores how cultural differences can affect interaction patterns. The study discusses diverse interactions from East Asian and Southeast Asian settings to reveal how culture often becomes the focal point in conversation, which in turn, plays an important role in international communication.

An Osaka Metropolitan University research team found a key indicator for the chemical activity of acoustic microbubbles and a correlation between the temperature of a liquid and that of the microbubbles generated.

Tongue cancer (TC) cells can enter a chemo-resistant state by activating pathways related to autophagy and cholesterol synthesis, report researchers from Institute of Science Tokyo. Using a large-scale library of TC organoids they developed, the researchers performed comprehensive comparative analyses of chemo-sensitive and chemo-resistant cells. Their efforts shed light on promising avenues toward new treatments for tongue cancer.

An Osaka Metropolitan University-led team has developed a method that makes it easy to measure the wrinkles in thin membranes used on large spacecraft using just a single camera.

Researchers in Japan have found that the taller the Japanese black pine trees (Pinus thunbergii) along the coast, the deeper their roots penetrate the ground. Deeper roots make trees more resistant to damage from tsunamis and strong winds. Their findings suggest that the resilience of coastal P. thunbergii trees may be improved by inducing deep root growth, specifically in short trees.

Sensory sensitivity and cognitive traits like savant abilities are often linked to autism spectrum disorder (ASD), yet their connection to gender diversity remains unclear. Reduced androgen (male sex hormone) exposure during early development may influence sensory atypicality and cognitive strengths. Investigating this, a team of researchers from Japan studied individuals with Klinefelter syndrome and sexual minorities assigned male at birth. Their findings reveal shared physiological mechanisms that connect sensory sensitivity, savant abilities, and gender dysphoria.

Researchers from Institute of Industrial Science, The University of Tokyo used computer simulations to determine the mechanisms that control the temperature dependence of molecular dynamics in a glassy supercooled liquid. This work may lead to higher-quality glass production at lower cost.

Macronucleophagy helps control micronucleophagy to protect yeast cells during stress. Through extensive experiments with yeast mutants, researchers from Science Tokyo found that disrupting macronucleophagy triggers excessive micronucleophagy, causing cell death. They further identified that this hyperactivation is driven by the accumulation of Nuclear vacuolar junction (Nvj1), a key nuclear membrane protein. These findings shed light on the links between different autophagy pathways under challenging conditions, which are crucial to maintain cell health.