Flight directions of birds migrating at high geographic and magnetic latitudes can be used to test bird orientation by celestial or geomagnetic compass systems under polar conditions. Migration patterns of arctic shorebirds, revealed by tracking radar studies during an icebreaker expedition along the Northwest Passage in 1999, support predicted sun compass trajectories but cannot be reconciled ...

A case of incessant supraventricular tachycardia continuing despite AV block is reported. Atrial tachycardia and AV nodal reentrant tachycardia were excluded, as was orthodromic tachycardia using a concealed accessory AV pathway. The earliest retrograde atrial activation was at the posterolateral tricuspid annulus, and the tachycardia was eliminated by ablation at this site. The findings in thi...

OBJECTIVES/HYPOTHESIS Evaluate outcomes of the standard static sling and orthodromic temporalis tendon transfer reanimation for facial nerve paralysis. STUDY DESIGN Retrospective case series at a tertiary care hospital of head and neck cancer patients with facial nerve palsy secondary to malignancy or resection. METHODS From 2004 to 2014, patients undergoing resection of malignancy that inv...

A polyclonal antibody raised against a conserved region of a mammalian FOS sequence was tested for its use as an activity marker in the rainbow trout. The FOS-like expression in the trout is entirely cytoplasmic and appears in a Nissl-like pattern. The reaction is specifically induced by both orthodromic and antidromic electrical stimuli and during motor responses evoked by natural stimulation,...

The intercalated cell masses of the amygdala are clusters of GABAergic neurons located strategically to influence behavioral responsiveness. Indeed, they receive glutamatergic sensory inputs from the basolateral amygdaloid complex and generate feedforward inhibition in neurons of the central amygdala that mediate important components of fear responses. In the present study, using whole-cell rec...

A contralateral bundle branch block (BBB) aberration during tachycardia with a preexisting BBB strongly suggests the presence of ventricular tachycardia. We report on a middle-aged, female patient presented with wide QRS tachycardia. The patient had orthodromic atrioventricular tachycardia with a left BBB aberration in the presence of a preexisting right BBB due to an abnormal His-Purkinje syst...

Numerous data indicate that nonsynaptic release of glutamate occurs both in normal and pathophysiological conditions. When reaching receptors in the postsynaptic density (PSD), glutamate (Glu) could affect the synaptic transmission. We have tested this possibility in the hippocampal CA1 synapses of rats, either by applying exogenous Glu to the CA1 neurons or by disruption of Glu transporter act...