The human mirror system has been the subject of much research over the past two decades, but little is known about the timecourse of mirror responses. In addition, it is unclear whether mirror and counter-mirror effects follow the same timecourse. We used single-pulse transcranial magnetic stimulation to investigate the timecourse of mirror and counter-mirror responses in the human brain. Exper...

Neurosteroids are involved in the regulation of multiple behavioral and physiological processes metabolic activities vertebrate brain. However, central mechanisms how neurosteroid synthesis is regulated far to be understood. Gonadotropin-inhibitory hormone (GNIH) a hypothalamic neuropeptide that negatively regulates gonadotropin secretion but also inhibits sexual aggressive behaviors birds mamm...

Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. In the recently discovered topological crystalline insulators SnTe and Pb 1−x Sn x (Te, Se), crystal symmetry and e...

Using first-principles electronic structure calculations, it is shown that ferromagnetic Heusler compounds Co2MnX (X = Si, Ge, Sn) present nontrivial topological characteristics and belong to the category of Weyl semimetals. These materials exhibit two topologically interesting band crossings near Fermi level. have complex 3D geometries in Brillouin zone are characterized by topology as Hopf li...

We propose the optical design of an adaptive and flexible 4-quadrant, or N-facet, spirally tiled mirror setup, to generate vortex on large diameter laser systems. From a far-field analysis, we derive optimal angular parameters that highest contents targeted Laguerre-Gaussian mode. The modal purities thus obtained are close those with standard segmented spiral phase plates mirrors. intensity beh...

In this paper, we propose three classes of multi-valued signature sequences for direct sequence code division multiple access (DS/CDMA) systems. The first class derived from the two-band perfect reconstruction quadrature mirror filter (PR-QMF) bank has perfect correlation properties when the number of users is two in the DS/CDMA system. The first two classes have perfect correlation properties ...