Metallic Bonding in Close-Packed Structures: Structural Frustration from a Hidden Gauge Symmetry.

Based on its simple valence electron configuration, we may expect lithium to have straightforward physical properties that are easily explained. However, solid lithium, when cooled below 77 K, develops a complex structure that has been debated for decades. A close parallel is found in sodium below 36 K where the crystal structure still remains unresolved.

Recent development of nanotechnology-empowered antigen assay methods for the control of infectious diseases.

The global spread of air-borne diseases, such as Covid-19 caused by the new coronavirus (SARS-CoV-2), has significantly impacted public health and economic development worldwide. Accurate and rapid detection of pathogens is the key to controlling the spread of infection and reducing severe illness and death. Compared to nucleic acid testing, rapid antigen testing for pathogen proteins shows unique advantages such as convenience, speed, and cost-effectiveness, but its sensitivity is limited.

Investigating Cooperative Behavior in Ecological Settings: An EEG Hyperscanning Study.

The coordinated interactions between individuals are fundamental for the success of the activities in some professional categories. We reported on brain-to-brain cooperative interactions between civil pilots during a simulated flight. We demonstrated for the first time how the combination of neuroelectrical hyperscanning and intersubject connectivity could provide indicators sensitive to the humans' degree of synchronization under a highly demanding task performed in an ecological environment.

Evaluation of cortical imaging techniques based on somatosensory evoked potentials.

In the present study we evaluate the performance of several inverse algorithms for reconstructing the cortical current density distributions from scalp EEG recordings. The direct cortical SEP recordings in a patient were used as a gold standard to assess the performance of the numerical algorithms. The present results suggest that L(1)-norm methods gave the most accurate results in terms of cortical current density imaging of brain responses invoked by somatosensory stimulation.

Evaluation of cortical current density imaging methods using intracranial electrocorticograms and functional MRI.

Objective: EEG source imaging provides important information regarding the underlying neural activity from noninvasive electrophysiological measurements. The aim of the present study was to evaluate source reconstruction techniques by means of the intracranial electrocorticograms (ECoGs) and functional MRI.

Methods: Five source imaging algorithms, including the minimum norm least square (MNLS), LORETA with L(p)-norm (p equal to 1, 1.