1,721,162 research outputs found
Visualizing and comparing distributions with half-disk density strips
Get PDFWe propose a user-friendly graphical tool, the half-disk density strip (HDDS), for visualizing and comparing probability density functions. The HDDS exploits color shading for representing a distribution in an intuitive way. In univariate settings, the half-disk density strip allows to immediately discern the key characteristics of a density, such as symmetry, dispersion, and multi-modality. In the multivariate settings, we define HDDS tables to generalize the concept of contingency tables. It is an array of half-disk density strips, which compactly displays the univariate marginal and conditional densities of a variable of interest, together with the joint and marginal densities of the conditioning variables. Moreover, HDDSs are by construction well suited to easily compare pairs of densities. To highlight the concrete benefits of the proposed methods, we show how to use HDDSs for analyzing income distribution and life-satisfaction, conditionally on continuous and categorical controls, from survey data. The code for implementing HDDS methods is made available through a dedicated R package
Information processing within the motor cortex. II. Intracortical connections between neurons receiving somatosensory cortical input and motor output neurons of the cortex
No full textInformation processing within the motor cortex. I. Responses of morphologically identified motor cortical cells to stimulation of the somatosensory cortex
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Concerto en ré mineur pour basson, orchestre à cordes et clavecin / Vivaldi, comp. ; Henri Helaerts, basson ; Orchestre de la Suisse Romande ; Ernest Ansermet, dir.. Concerto en ut mineur pour hautbois et orchestre à cordes / Marcello, comp. ; Roger Reversy, htb ; Orchestre de la Suisse Romande ; Ernest Ansermet, dir.
No full textTitre uniforme : Vivaldi, Antonio (1678-1741). Compositeur. [Concertos. Basson, orchestre à cordes, basse continue. RV 481. Ré mineur]Titre uniforme : Marcello, Alessandro (1684-1747). Compositeur. [Concertos. Hautbois, orchestre à cordes, basse continue. SF D935. Ré mineur]Comprend : Concerto en ré mineur pour basson, orchestre à cordes et clavecin ; Concerto en ut mineur pour hautbois et orchestre à cordesBnF-Partenariats, Collection sonore - BelieveContient une table des matière
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
The mesencephalic–hypoglossal nuclei loop as a possible central pattern generator for rhythmical whisking in rats
No full textIt has been previously demonstrated that the Me5 nucleus is involved in the genesis of reflex activities at whisker pad level.
Specific Me5 neurons, which provide sensory innervation of the macrovibrissae, are monosynaptically connected with small
hypoglossal neurons innervating the extrinsic muscles that control macrovibrissal movements. Artificial whisking, induced
by the electrical stimulation of the peripheral stump of the facial nerve and the electrical stimulation of the XII nucleus or
the infraorbital nerve, induced evoked responses in the whisker pad extrinsic motor units, along with a significant increase
in the electromyographic activity of the extrinsic pad muscles (Mameli et al. in Acta Oto-Laryngol 126:1334–1338, 2006;
in Pfűgers Arch Eur J Physiol 456:1189–1198, 2008; in Brain Res 1283:34–40, 2009; in Exp Brain Res 234:753–761, 2016).
In anaesthetized rats, we evaluated the possible involvement of this Me5–XII loop in the genesis of rhythmical whisking.
The anatomical findings showed that in addition to the ipsilateral, even the contralateral Me5 nucleus could be retrogradely
labeled by the Dil tracer injected into the whisker pad of one side, they, furthermore, showed labeled axons extending across
the midline between the two nuclei. The electrophysiological findings agreed with the neuroanatomical results, since the
mechanical or artificially induced deflection of the whiskers of one side, evoked in the Me5 contralateral nucleus different
patterns of responses. The hypothesis that the Me5–XII loops, along with their cross-linked relationship, could act as a
“central generator” responsible for the stereotyped symmetrical pattern of macrovibrissal movements such as rhythmical
whisking has been discussed
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