Listar GI-NEURO - Artigos por data de publicación
Mostrando ítems 21-40 de 165
-
Transcranial static magnetic field stimulation of the human motor cortex
(Wiley, 2001-08-01)[Abstract] The aim of the present study was to investigate in healthy humans the possibility of a non-invasive modulation of motor cortex excitability by the application of static magnetic fields through the scalp. Static ... -
Electrical activity in primary visual area due to interocular suppression
(Lippincott, 2001-12)[Abstract] Under binocular rivalry conditions, evoked potentials to lower hemifield stimulation are more positive for the dominant than for the suppressed eye between 100 and 300 ms. However, this pattern reverses when the ... -
Visual response augmentation in cat (and macaque) LGN: potentiation by corticofugally mediated gain control in the temporal domain
(Wiley, 2001-12-24)[Abstract] Visual responses of neurons are dependent on the context of a stimulus, not only in spatial terms but also temporally, although evidence for temporally separate visual influences is meagre, based mainly on studies ... -
Synaptic Integration by V1 Neurons Depends on Location Within the Orientation Map
(Elsevier/Cell Press, 2002)[Abstract] Neurons in the primary visual cortex (V1) are organized into an orientation map consisting of orientation domains arranged radially around “pinwheel centers” at which the representations of all orientations ... -
Completing the corticofugal loop: a visual role for the corticogeniculate Type 1 metabotropic glutamate receptor
(Society of Neuroscience, 2002-04-01)[Abstract] The way in which the brain deals with sensory information relies not only on feedforward processing of signals from the periph- ery but also on feedback inputs. This is the case of the massive projection back ... -
The lemniscal–cuneate recurrent excitation is suppressed by strychnine and enhanced by GABAA antagonists in the anaesthetized cat
(Wiley, 2002-11-13)[Abstract] In the somatosensory system, cuneolemniscal (CL) cells fire high frequency doublets of spikes facilitating the transmission of sensory information to diencephalic target cells. We studied how lemniscal feedback ... -
Nitric oxide-mediated cortical activation: a diffuse wake-up system
(Society of Neuroscience, 2003)Nitric oxide (NO) has been implicated in some of the central pathways engaged in the regulation of the sleep–wake cycle. The existence of nitric oxide synthase (NOS) in the cholinergic basal forebrain (BF) cells projecting ... -
A Computational Model of Cuneothalamic Projection Neurons
(Taylor and Francis, 2003)[Abstract] The dorsal column nuclei, cuneatus and gracilis, play a fundamental role in the processing and integration of somesthetic ascending information. Intracellular and patch-clamp recordings obtained in cat in vivo ... -
Combinación de nuevas técnicas electrofisiológicas y de imagen en el estudio de la función de la corteza visual primaria
(J. V. Sácnhez Andrés, 2003)This work summarizes current research focused on explaining orientation selectivity of primary visual cortex (V1), and describes the electrophysiological and imaging techniques than are being used. Development. The study ... -
Sleep and wakefulness in the cuneate nucleus: a computational study
(Springer, 2003)We present a computational study about the influence of the sensorimotor cortex on the processing of the cuneate nucleus during sleep as well as wakefulness. Realistic computational models were developed supported by ... -
A simple procedure using auditory stimuli to improve movement in Parkinson´s disease: a pilot study
(Research Gate, 2003-01-25)[Abstract] It has been suggested that sequential movements in Parkinsonian patients might be improved by the effects of external rhythmic cues, either visual or acoustic, acting as a sort of timekeeper. ... -
Receptive field structure of burst and tonic firing in feline lateral geniculate nucleus
(Wiley, 2003-09-12)There are two recognised modes of firing activity in thalamic cells, burst and tonic. A low-threshold (LT) burst (referred to from now on as ‘burst’) comprises a small number of high-frequency action potentials riding the ... -
Temporal variability of gait in Parkinson disease: effectsof a rehabilitation programme based on rhythmic sound cuesTemporal variability of gait in Parkinson disease: effectsof a rehabilitation programme based on rhythmic sound cues
(Elsevier, 2004)[Abstract] It has been suggested that sequential movements in patients with Parkinson's disease (PD) might be improved by the effects of external rhythmic cues. We studied spatiotemporal gait parameters and temporal gait ... -
The role of glyclinergic interneurons in the dorsal column nuclei
(Elsevier, 2004-03-12)[Abstract] The aim of this paper is to provide new insights about the circuitry and the role of the dorsal column nuclei (DCN) in processing somatosensory information. The presence of glycinergic cells, a second type of ... -
Intracuneate mechanisms underlying primary afferent cutaneous processing in anaesthetized cats
(Wiley, 2004-06-02)[Abstract] The cutaneous primary afferents from the upper trunk and forelimbs reach the medial cuneate nucleus in their way towards the cerebral cortex. The aim of this work was twofold: (i) to study the mechanisms used ... -
Fisioterapia en los pacientes quemados: quemaduras,tratamiento fisioterápico y aspectos relacionados
(Elsevier, 2004-12)[Resumen] Este artículo tiene como objetivos, analizar las causas principales de las grandes quemaduras, de los pacientes ingresados en el Instituto del Quemado de Córdoba-Argentina, en el periodo de tiempo comprendido ... -
Modulatory effects mediated by metabotropic glutamate receptor 5 on lateral geniculate nucleus relay cells
(Wiley, 2005-01-18)[Abstract] Glutamate is thought to be the excitatory neurotransmitter in the lateral geniculate nucleus (LGN) of the cat, mediating visual transmission from the retina via ionotropic receptors of both d,l-α-amino-3-hydro ... -
Invariant computations in local cortical networks with balanced excitation and inhibition
(Nature, 2005-06-23)[Abstract] Cortical computations critically involve local neuronal circuits. The computations are often invariant across a cortical area yet are carried out by networks that can vary widely within an area according to its ... -
Local networks in visual cortex and their influence on neuronal responses and dynamics
(Elsevier, 2005-11-07)[Abstract] Networks of neurons in the cerebral cortex generate complex outputs that are not simply predicted by their inputs. These emergent responses underlie the function of the cortex. Understanding how cortical networks ... -
Looking back: corticothalamic feedback and early visual processing
(Elsevier, 2006)[Abstract] Although once regarded as a simple sensory relay on the way to the cortex, it is increasingly apparent that the thalamus has a role in the ongoing moment-by-moment processing of sensory input and in cognition. ...