Silent Sinus Syndrome of the Frontal Sinus: A Case Report.

Silent sinus syndrome is a rare condition that typically affects the maxillary sinus, with only a few reported cases of frontal sinus involvement. Blockage of the sinus ostium leads to persistent hypoventilation, creating negative pressure and eventual sinus collapse. This report describes a previously undocumented case of facial asymmetry due to frontal silent sinus syndrome, following multiple childhood nasal injuries.

A New High-Pressure High-Temperature Phase of Silver Antimonate AgSbO with Strong Ag-O Hybridization.

We report on a new polymorph of silver antimonate AgSbO discovered with the use of high-pressure high-temperature synthesis at 16 GPa and 1380 °C. The crystal structure is determined from X-ray powder diffraction, and we find this new high-pressure phase crystallizes in monoclinic space group 2/ with the following values: = 8.4570(3) Å, = 9.

State- and Circuit-Dependent Opponent Processing of Fear.

The presence of valence coding neurons in the basolateral amygdala (BLA) that form distinct projections to other brain regions implies functional opposition between aversion and reward during learning. However, evidence for opponent interactions in fear learning is sparse and may only be apparent under certain conditions. Here we test this possibility by studying the roles of the BLA→central amygdala (CeA) and BLA→nucleus accumbens (Acb) pathways in fear learning in male rats.

Viscerosensory signalling to the nucleus accumbens via the solitary tract nucleus.

The nucleus of the solitary tract (NTS) receives direct viscerosensory vagal afferent input that drives autonomic reflexes, neuroendocrine function and modulates behaviour. A subpopulation of NTS neurons project to the nucleus accumbens (NAc); however, the function of this NTS-NAc pathway remains unknown. A combination of neuroanatomical tracing, slice electrophysiology and fibre photometry was used in mice and/or rats to determine how NTS-NAc neurons fit within the viscerosensory network.