Yukihiro Tadokoro

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Distributions of efferent neurons projecting to the superior colliculus (SC), the pretectum, and the cerebellar cortex were studied in the rat prepositus hypoglossi nucleus (PRH) by retrograde labeling with wheat germ agglutinin-horseradish peroxidase (WGA-HRP). After injection of the tracer into the unilateral SC, small- and medium-sized neurons were(More)
We show that weak periodic driving can exponentially strongly change the rate of escape from a potential well of a system driven by telegraph noise. The analysis refers to an overdamped system, where escape requires that the noise amplitude θ exceed a critical value θ(c). For θ close to θ(c), the exponent of the escape rate displays a nonanalytic dependence(More)
Pulsatile secretion of luteinizing hormone (LH) in ovariectomized rats was evaluated before and after local implantation of crystalline estradiol benzoate (EB) into various regions within the forebrain. Serum concentrations of LH were measured by radioimmunoassay in samples collected at 6-min intervals through indwelling cardiac catheters. In rats with EB(More)
To obtain electrophysiological evidence of an involvement of the anteroventral 3rd ventricle (AV3V) area in the osmotic control of neurohypophysial hormone release, extracellular action potentials of paraventricular (PVN) oxytocinergic and vasopressinergic cells during osmotic stimulation induced by i.p. injection of 1.5 M-NaCl solution were obtained from(More)
—In this letter, the concept of multiple serially-concate-nated codes is invoked in the context of stochastic resonance (SR), where the achievable performance is improved by increasing noise power. More specifically, the receiver's iterative decoding process is characterized with the aid of extrinsic information transfer (EXIT) charts, such that the SR(More)
In order to determine whether oxytocin release is controlled by an osmoreceptor mechanism identical with that for vasopressin release, the plasma oxytocin concentration and plasma osmolality were measured during intraatrial infusion and after intraventricular injection of various osmotic solutions in unanesthetized rats. Intraatrial infusion of 0.6 M NaCl(More)
PURPOSE To examine the reliability and usefulness of a video-based Hirschberg test under clinical conditions. METHODS The authors estimated ocular deviation in 87 patients with strabismus through automated analysis of corneal reflex displacement using a video refractor. The reproducibility of measurement, the comparison with the prism and alternate cover(More)