Search results for "cats"

La qualità dell’aria indoor: una priorità ambientale e sanitaria

2009

Effect of claustrum stimulation on neurons of the contralateral medial oculomotor area, in the cat

1990

In chloralose-anaesthetized cats, the extracellular spontaneous unitary activity was recorded from 157 neurons, located in the medial oculomotor area. 98 units were identified as projecting onto the superior colliculus. Electrical stimulations of the contralateral claustrum provoked, on 13 of these cells, an excitatory effect, lasting 10-35 ms and appearing with a latency of 20-50 ms. Full length section of the corpus callosum totally abolished the contralateral claustrum effect. The results suggest that in the cat, the claustrum may have a role in the bilateral control of the visuo-motor performance.

Que pèsent les syndicats ? Note pour la Fondation pour l'innovation politique

2018

Les syndicats sont les acteurs incontournables d’une démocratie sociale marquée par de nombreuses réformes depuis les années 2000. Ces réformes cherchent à promouvoir une nouvelle régulation entre les employeurs et les représentants des salariés, au plus près des problématiques des entreprises, voire une nouvelle fabrique des réformes liées au travail et aux relations professionnelles. Elles sont le produit de négociations sociales entre les partenaires sociaux et de concertations avec les gouvernements successifs. Elles ont également soulevé des contestations. Mais que pèsent exactement les syndicats dans le monde du travail et comment se fonde leur légitimité ? Depuis 2008, la CFDT, la CG…

La seconde « mesure d’audience » syndicale de 2017. Un analyseur des dynamiques syndicales en France

2017

International audience

Analysis of neuronal networks in the visual system of the cat using statistical signals--simple and complex cells. Part II.

1978

Superimposing additively a two-dimensional noise process to deterministic input signals (bars) the neurons of area 17 show a class-specific reaction for the task of signal extraction. Moving both parts of the signals simultaneously and varying the signal to noise ratio (S/N) the simple cells achieve the same performance as resulted from the psychophysical experiment. Type I complex cells extract moving deterministic signals (i.e. bars) from the stationary noise, whereas in the answers of Type II complex cells the statistical parts of the signals predominate. Considering the different cell types each as a series of a linear and a nonlinear system one obtains the cell specific space-time freq…

Considerable deficits in the detection performance of the cat after lesion of the suprasylvian visual cortex

1989

The ability of two cats to discriminate between two geometrical outline patterns in the presence of superimposed structured background was tested before and after bilateral removal of the lateral suprasylvian visual areas (PMLS, PLLS, AMLS, ALLS, part of area 7). There were mild deficits when patterns and background were kept stationary; these deficits may be due to a partial undercutting of areas 17, 18 and 19. However, there was a severe impairment in performance when the patterns were moving on a stationary background which may be due to loss of the suprasylvian visual areas. Movement of the background relative to the figure resulted in an intermediate detection deficit.

Human cationic amino acid transporter hCAT-3 is preferentially expressed in peripheral tissues.

2001

At least five distinct carrier proteins form the family of mammalian cationic amino acid transporters (CATs). We have cloned a cDNA containing the complete coding region of human CAT-3. hCAT-3 is glycosylated and localized to the plasma membrane. Transport studies in Xenopus laevis oocytes revealed that hCAT-3 is selective for cationic L-amino acids and exhibits a maximal transport activity similar to other CAT proteins. The apparent substrate affinity and sensitivity to trans-stimulation of hCAT-3 resembles most closely hCAT-2B. This is in contrast to rat and murine CAT-3 proteins that have been reported to display a very low activity and to be inhibited by neutral and anionic L-amino acid…

Lista de los señores abogados del ilustre Colegio de la Ciudad de Valencia, que residen en ella, sacada para este año 1773.

Inclou, a més de la llista, una "Nota" informativa sobre legislació signada pel secretari del Col·legi Dr. Don Joaquin Aparici y Bas, datada: Valencia 12. de Agosto de 1773 Sign.: [ ]2 Reclams

Bilaterally recorded multiple-unit activity of the cingulate cortex during head turning conditioning with unilateral medial forebrain bundle stimulat…

1993

Cats were conditioned to turn their heads using a tone conditioned stimulus (CS) and medial forebrain bundle stimulation (MFB) unconditioned stimulus (US). The CS+ was delivered to one ear at a time, in random order, followed by the US. A tone of a different frequency was used as a CS-. The cats learned to respond differentially to the CSs showing head movements of greater acceleration to the CS+ than CS- over sessions. Bilateral recordings of cingulate cortex multiple-unit activity showed increased response amplitudes over sessions and larger responses in the hemisphere ipsilateral to the US. Since ipsilateral multiple-unit responses did not differ for the CSs, the asymmetry was probably d…

A method for rapid implantation of multielectrode systems.

1991

The implantation of several chronic electrodes at the same time was needed for the studies in which both evoked slow potential and multiple unit neural activity of different brain sites were recorded during classical conditioning in freely moving cats. The recording electrodes were made of 25-75 microns insulated stainless steel or nichrome wires which were inserted into a thin hypodermic needle of a fixed, calibrated length. The fast implantation system described here is based on the use of a stereotaxic frame as a stand for a drill and as a support for an electrode holder with which the electrodes were implanted through precision holes drilled directly according to the coordinates of the …