Search results for "PLANTE"

Hippocampal theta-band activity and trace eyeblink conditioning in rabbits.

2009

The authors examined the relationship between hippocampal theta activity and trace eyeblink conditioning. Hippocampal electrophysiological local field potentials were recorded before, during, and after conditioning or explicitly unpaired training sessions in adult male New Zealand White rabbits. As expected, a high relative power of theta activity (theta ratio) in the hippocampus predicted faster acquisition of the conditioned response during trace conditioning but, contrary to previous results obtained using the delay paradigm, only in the initial stage of learning. The presentation of the conditioned stimulus overall elicited an increase in the hippocampal theta ratio. The theta ratio dec…

Natural history of the Sprint Fidelis lead: survival analysis from a large single-center study.

2012

The purposes of our study were to: (1) determine lead failure rate in a large single-center cohort of Sprint Fidelis 6949 (Fidelis) leads, (2) define the risk of lead failure over time, (3) assess the impact of the Lead Integrity Alert (LIA) on lead failure presentation, and (4) identify independent predictors of Fidelis lead failure. All patients who underwent implantation of a Fidelis lead between September 2004 and July 2007 were included. Demographic, clinical, and device characteristics at the time of implant and prior to failure were collected and analyzed. A total of 971 Fidelis leads (706 men, 265 women, mean age 68.4 ± 12.8 years) were implanted. Over a mean follow-up of 46.3 month…

Is atrial sensing of ventricular far-field signals important in single-lead VDD pacing?

1998

UNLABELLED In single-lead VDD pacing the atrial sensitivity frequently is programmed to sensitive values. Atrial sensing of ventricular far-field signals should be reduced by differential atrial sensing. The aim of the study was to evaluate the effectiveness of this approach. METHODS The study included 10 patients with a single-lead VDD pacemaker (Thera 8948, Lead 5032). The atrial sensitivity was set to its most sensitive value of 0.18 mV and the telemetered intraatrial EGM was continuously recorded. After atrial tracked ventricular pacing, VVI pacing was performed with pacing rates from 100 to 160 beats/min in steps of 10 beats/min and up to 165 beats/min. The peak-to-peak amplitudes of P…

Right ventricular lead placement and ventricular dyssynchrony in a pacemaker population: An acute analysis from the evaluation of apical and non-apic…

2016

How Can We Identify the Best Implantation Site for an ECG Event Recorder?

2000

ZELLERHOFF, C., et al.: How Can We Identify the Best Implantation Site for an ECG Event Recorder? The aim of this study was to show how to find the preferable implantation site for an ECG event recorder (ECG-ER). We compared the quality of bipolar ECG recordings (4-cm electrode distance, vertical position) in 65 patients at the following sites: left and right subclavicular, left and right anterior axillary line (4th-5th interspace), left and right of the sternum (4th-5th interspace), heart apex, and subxyphoidal. The results were compared to the standard ECG lead II. In 30 patients, an additional comparison between vertical and horizontal ECG registrations was done using the same sites. ECG…

Role of the basolateral amygdala in retrieval of conditioned flavors in the awake rat.

2014

International audience; Learned association between odor, taste and further post-ingestive consequence is known as flavor nutrient conditioned preference. Amygdala is supposed to be one of the areas involved in these associations. In the present study, one flavor was associated with a 16% glucose (CS+) whereas another flavor was paired with less reinforcing 4% glucose (CS-). We showed that CS+ presentation after conditioning increased Fos expression in the basolateral nucleus of amygdala (BLA). Furthermore, we performed electrophysiological recordings in the BLA in free moving rats. After preference acquisition, rats were exposed to either the CS+ or the CS-. The proportion of neurons showi…

Regeneración ósea guiada simultánea en implantes cigomáticos con una aproximación exteriorizada en una atrofia maxilar avanzada

2020

espanolSe presenta un caso clinico en el que se rehabilita a una paciente con maxilar superior atrofico mediante una combinacion de implantes cigomaticos, colocados mediante una aproximacion exteriorizada, e implantes anteriores convencionales palatinizados. Se realizo un procedimiento de regeneracion osea guiada alrededor de los implantes cigomaticos para obtener un mayor grosor de la cortical vestibular y palatina alrededor de los implantes del maxilar superior y mejorar el pronostico. A un ano de la carga protesica, el hueso periimplantario se mantiene estable. EnglishA clinical case is presented in which a patient with atrophic upper jaw is rehabilitated by a combination of zygomatic im…

Fruits arriving to the west. Introduction of cultivated fruits in the Iberian Peninsula

2021

Agricultural activities, including practices, crops and techniques have evolved throughout history undergoing tremendous changes. From the early Neolithic farmers in the Mediterranean focused on cereal agriculture and only later, during the 4th/3rd millennium cal. BC in the Eastern basin, other species such as fruit trees were introduced into the agrarian system transforming the model that had been in use for millennia. Fruit tree management required innovation and investment and more importantly multi-year foresight as the new crops entailed a new pace of work with delayed returns and, thus, a greater entanglement with the land. Processes of social complexity and urbanization accompanied t…

Phytolith analyses from Khil and Kaf Taht el-Ghar (Western Maghreb): Plant use trajectories in a long-term perspective

2021

In this paper we present the results of phytolith investigations at two archaeological sites in northwestern Morocco: Khil (Tangier) and Kaf Taht el-Ghar (Tétouan). The two sites located in Western Maghreb, one on the Atlantic and one on the Mediterranean coast, were investigated in the framework of the AGRIWESTMED project. Phytolith analysis complemented archaeobotanical, geoarchaeological and archaeological investigations to better identify plant use during the entire occupation sequence. At Khil 16 samples have been studied, coming from two profiles excavated in two different caves of the same system – grotte B and grotte C – that span a chronology comprised between the early Neolithic a…

Exotic foods reveal contact between South Asia and the Near East during the second millennium BCE

2020

Aunque el papel clave del comercio a larga distancia en la transformación de las cocinas en todo el mundo está bien documentado desde al menos la época romana, la prehistoria del comercio de alimentos euroasiático es menos visible. Con el fin de arrojar luz sobre la transformación de las cocinas del Mediterráneo oriental durante la Edad del Bronce y la Edad del Hierro Temprana, analizamos los microrestos y las proteínas conservadas en el cálculo dental de individuos que vivieron durante el segundo milenio a. Nuestros resultados proporcionan evidencia clara del consumo de alimentos básicos esperados, como cereales (Triticeae), sésamo ( Sesamum ) y dátiles ( Phoenix ). Además, informamos evid…