Search results for "Lobe"
showing 10 items of 520 documents
Granger Causality Analysis of Transient Calcium Dynamics in the Honey Bee Antennal Lobe Network
2023
Odorant processing presents multiple parallels across animal species, and insects became relevant models for the study of olfactory coding because of the tractability of the underlying neural circuits. Within the insect brain, odorants are received by olfactory sensory neurons and processed by the antennal lobe network. Such a network comprises multiple nodes, named glomeruli, that receive sensory information and are interconnected by local interneurons participating in shaping the neural representation of an odorant. The study of functional connectivity between the nodes of a sensory network in vivo is a challenging task that requires simultaneous recording from multiple nodes at high temp…
Interictal Heart Rate Variability Analysis Reveals Lateralization of Cardiac Autonomic Control in Temporal Lobe Epilepsy.
2020
International audience; Purpose: The temporal lobe, a critical hub for cognition, also plays a central role in the regulation of autonomic cardiovascular functions. Lesions in this area are usually associated with abnormalities in the regulation of heart rate (HR) and blood pressure (BP). The analysis of the heart rate variability (HRV) is useful to evaluate the cardiac parasympathetic nervous system activity. This study aims at comparing HRV changes occurring in two groups of patients suffering from Temporal Lobe Epilepsy (TLE). To that aim, we evaluated patients differentiated by the right or left location of the epileptic foci. Materials and Methods: Fifty-two adult patients with a diagn…
Influence of the nature of the substrate and of operative parameters in the electrocarboxylation of halogenated acetophenones and benzophenones
2005
Abstract The electrocarboxylation of halogenated acetophenones and benzophenones to the corresponding hydroxycarboxylic acids has been carried out in undivided cell equipped with aluminium sacrificial anode and using 1-methyl-2-pyrrolidinone (NMP) as the solvent. The radical anion generated by the electro-reduction of the aromatic ketone is involved in several competitive reactions which lead to the formation of the target hydroxycarboxylic acid, the corresponding alcohol and pinacol and the de-halogenated parent ketone. If sufficiently negative working potentials are imposed, the latter is reduced to the corresponding carboxylate, pinacol and alcohol. Very different results in terms of sel…
Effects of lobeline on spatial learning in C57BL mice
2000
In the present study, the effect of lobeline on water maze performance in C57BL/6J mice have been evaluated. In the first experiment, subjects were 2-month old mice to which lobeline (3.5 and 7 mg/kg) had been administered SC along 5 days 15 min before daily training in the water maze. Results showed that lobeline did not have effects on the acquisition of the task. In the second experiment, effects of lobeline were compared in 2, 6 and 20-month old mice. In this experiment the drug was administered daily five days prior to the beginning of the task and during the five days of acquisition. Results indicated that 20-month old mice learned the spatial task more slowly than 2 and 6-month old m…
Culture, Cultural Distance and Cultural Intelligence : A Multilevel Hierarchical Linear Model Analysis of Contextual Business Cultural Intelligence Q…
2019
Master's thesis Business Administration BE501 - University of Agder 2019 Purpose –The purpose of our master thesis is to investigate contextual antecedents to Cultural Intelligence development. Particularly, we assess the ability of cultural distance to predict Business Cultural Intelligence Quotient scores.Design / methodology / approach–Given our literature review, we hypothesize that cultural distance significantly affects BCIQ in a positive way. For this matter, we split our hypothesis into three sub-hypothesis and measured cultural distance in three ways: having at least one foreign parent, the Mahalanobis cultural distance, and the delta of each GLOBE’s practices dimensions expressed …
Identification Of Mitotically Competent SOX2+ Cells In White Matter Of Normal Human Adult Brain
2011
AbstractSOX2 expression is linked to the undifferentiated state of stem cells in mammalian neurogenic niches. While its expression has been reported in the adult human subventricular zone (SVZ), to date it has not been detected in adult human white matter. Here we describe a population of SOX2+ cells from the white matter of the adult human temporal lobe, which proliferate and express glial markers in vitro.
Preacondicionamiento remoto por isquemia reperfusión en la lobectomía pulmonar. Un estudio sobre la prevención del estrés oxidativo
2015
Durante la lobectomía pulmonar, por la necesidad de ventilación unipulmonar, el pulmón intervenido sufre colapso y se produce el fenómeno de vasoconstricción pulmonar hipóxica. Este colapso se sigue de expansión-reperfusión pulmonar. Este mecanismo de colapso y reexpansión- reperfusión condiciona la producción de daño oxidativo pulmonar. El preacondicionamiento isquémico remoto (RIPC) ha demostrado ser eficaz en la protección tisular en numerosos órganos a distancia del órgano o tejido donde se aplica. Se hipotetiza que el RIPC puede mejorar el daño oxidativo pulmonar en pacientes a los que se realiza lobectomía pulmonar. MATERIAL Y MÉTODOS. Estudio randomizado, prospectivo, controlado y do…
Lobes ezera ekoloģiskā kvalitāte
2016
Bakalaura darba nosaukums ir „Lobes ezera ekoloģiskā kvalitāte”. Darba mērķis bija apkopot nepieciešamos literatūras avotus, lai izpētītu, raksturotu un izanalizētu Lobes ezera ekoloģisko kvalitāti. Teorijas daļā tika raksturots Lobes ezers un tā sateces baseins, galvenie dabas virszemes ūdeņu sastāva veidojošie un ietekmējošie procesi, ezeru eitrofikācijas un klasifikācijas parametri. Rezultātu un diskusiju daļā tika analizēti iegūtie dati no Latvijas Vides ģeoloģijas un meteoroloģijas centra par Lobes ezera ūdens ķīmisko sastāvu 2008. gadā un salīdzināti ar iegūtajiem rezultātiem. Lai sniegtu Lobes ezera ekoloģiskās kvalitātes vērtējumu, tika noteikti Lobes ezera ķīmiskie parametri un Kar…
Less Effort, Better Results: How Does Music Act on Prefrontal Cortex in Older Adults during Verbal Encoding? An fNIRS Study
2014
Several neuroimaging studies of cognitive aging revealed deficits in episodic memory abilities as a result of prefrontal cortex (PFC) limitations. Improving episodic memory performance despite PFC deficits is thus a critical issue in aging research. Listening to music stimulates cognitive performance in several non-purely musical activities (e.g., language and memory). Thus, music could represent a rich and helpful source during verbal encoding and therefore help subsequent retrieval. Furthermore, such benefit could be reflected in less demand of PFC, which is known to be crucial for encoding processes. This study aimed to investigate whether music may improve episodic memory in older adult…
Chronic neural probe for simultaneous recording of single-unit, multi-unit, and local field potential activity from multiple brain sites
2017
Drug resistant focal epilepsy can be treated by resecting the epileptic focus requiring a precise focus localisation using stereoelectroencephalography (SEEG) probes. As commercial SEEG probes offer only a limited spatial resolution, probes of higher channel count and design freedom enabling the incorporation of macro and microelectrodes would help increasing spatial resolution and thus open new perspectives for investigating mechanisms underlying focal epilepsy and its treatment. This work describes a new fabrication process for SEEG probes with materials and dimensions similar to clinical probes enabling recording single neuron activity at high spatial resolution.Polyimide is used as a bi…