Browsing by Author "Rivadulla, Casto"
Now showing items 1-20 of 34
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Actions of compounds manipulating the nitric Oxide system in the cat primary visual cortex
Cudeiro, Javier; Rivadulla, Casto; Rodríguez, Rosa; Grieve, Kenneth; Martínez-Conde, Susana; Acuña, Carlos (Wiley, 1997-10)[Abstract:] We iontophoretically applied NG-nitro-L-arginine (l-NOArg), an inhibitor of nitric oxide synthase (NOS), to cells (n= 77) in area 17 of anaesthetized and paralysed cats while recording single-unit activity ... -
Anandamide activation of CB1 receptors increases spontaneous bursting and oscillatory activity in the thalamus
Dasilva, Miguel; Grieve, Kenneth; Cudeiro, Javier; Rivadulla, Casto (Elsevier, 2014-02-05)[Abstract] The endocannabinoid system is a modulatory system that has been strongly associated with the regulation of functions as learning and memory, pain perception and sensory physiology in many areas of the central ... -
Bursting thalamic responses in awake monkey contribute to visual detection and are modulated by corticofugal feedback
Ortuño Silva, Tania; Grieve, Kenneth; Cao, Ricardo; Cudeiro, Javier; Rivadulla, Casto (Frontiers, 2014-05-30)[Abstract] The lateral geniculate nucleus is the gateway for visual information en route to the visual cortex. Neural activity is characterized by the existence of two firing modes: burst and tonic. Originally associated ... -
Can pathway-specific LFPs be obtained in cytoarchitectonically complex structures?
Marakova, Julia; Ortuño Silva, Tania; Korovaichuk, Alejandra; Cudeiro, Javier; Marakov, Valeri A.; Rivadulla, Casto; Herreras, Oscar (Frontiers, 2014-05-01)[Abstract] Deciphering how the brain encodes the continuous flow of information contained in natural stimuli requires understanding the spontaneous activity of functional assemblies in multiple neuronal populations. A ... -
Cannabis, endocannabinoid CB1 receptors, and the neuropathology of vision
Dasilva, Miguel; Grieve, Kenneth; Rivadulla, Casto (Elsevier, 2016)[Abstract] Cannabinoid (CB) receptors are widely distributed through the central nervous system, where they play a relevant role in various cognitive processes such as learning, memory, or attention. However, despite the ... -
Changes in Visual Responses in the Feline dLGN: Selective Thalamic Suppression Induced by Transcranial Magnetic Stimulation of V1
Labra, Carmen de; Rivadulla, Casto; Grieve, Kenneth; Mariño Alfonso, Xurxo; Espinosa, Nelson; Cudeiro, Javier (Oxford University Press, 2006-08-14)[Abstract] Transcranial magnetic stimulation (TMS) of the cortex can modify activity noninvasively and produce either excitatory or inhibitory effects, depending on stimulus parameters. Here we demonstrate controlled ... -
Completing the corticofugal loop: a visual role for the corticogeniculate Type 1 metabotropic glutamate receptor
Rivadulla, Casto; Martínez Otero, Luis Miguel; Varela, Carmen; Cudeiro, Javier (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 ... -
Cross‑modal reaction of auditory and visual cortices after long‑term bilateral hearing deprivation in the rat
Pernia, M.; Díaz, I.; Colmenárez‑Raga, A. C.; Rivadulla, Casto; Cudeiro, Javier; Plaza, I.; Merchán, M. A. (Springer Nature, 2019-11-28)[Abstract] Visual cortex (VC) over-activation analysed by evoked responses has been demonstrated in congenital deafness and after longterm acquired hearing loss in humans. However, permanent hearing deprivation has not ... -
Different sources of nitric oxide mediate neurovascular coupling in the lateral geniculate nucleus of the cat
Labra, Carmen de; Rivadulla, Casto; Espinosa, Nelson; Dasilva, Miguel; Cao, Ricardo; Cudeiro, Javier (Frontiers, 2009-09-08)[Abstract] Understanding the link between neuronal responses (NRs) and metabolic signals is fundamental to our knowledge of brain function and it is a milestone in our efforts to interpret data from modern non invasive ... -
Effects of static magnetic fields on the visual cortex: reversible visual deficits and reduction of neuronal activity
Aguilá Macías, Jordi; Cudeiro, Javier; Rivadulla, Casto (Oxford, 2014-09-26)[Abstract] Noninvasive brain stimulation techniques have been successfully used to modulate brain activity, have become a highly useful tool in basic and clinical research and, recently, have attracted increased attention ... -
Effects on EEG of low (1Hz) and high (15Hz) frequency repetitive transcranial magnetic stimulation of the visual cortex: a study in the anesthetized cat
Espinosa, Nelson; Labra, Carmen de; Rivadulla, Casto; Mariño Alfonso, Xurxo; Grieve, Kenneth; Cudeiro, Javier (Bentham Open, 2007-12-07)[Abstract] Here we confirm our earlier findings that showed 1Hz rTMS over the primary visual cortex of the anesthetized cat, known to cause inhibition of the cortex, induces an increase in power in the slow, delta band of ... -
Endocannabinoid CB1 receptors modulate visual output from the thalamus
Dasilva, Miguel A.; Grieve, Kenneth; Cudeiro, Javier; Rivadulla, Casto (Springer, 2011-07-20)[Abstract] Rationale Endocannabinoids have emerged as a modulatory brain system affecting different types of synapses, broadly distributed throughout the CNS, which explain the diverse psychophysical effects observed ... -
Foci of orientation plasticity in visual cortex
Dragoi, Valentin; Rivadulla, Casto; Sur, Mriganka (Nature, 2001-05-03)[Abstract] Cortical areas are generally assumed to be uniform in their capacity for adaptive changes or plasticity1, 2, 3, 4. Here we demonstrate, however, that neurons in the cat striate cortex (V1) show pronounced ... -
Further observations on the role of nitric oxide in the feline lateral geniculate nucleus
Cudeiro, Javier; Rivadulla, Casto; Rodríguez, R.; Martínez-Conde, Susana; Martínez, L.; Grieve, Kenneth; Acuña, Carlos (Wiley, 1996-01)[Abstract] We have examined the responses of a population of 77 cells in the dorsal lateral geniculate nucleus (dLGN) of the anaesthetized, paralysed cat. Here the synthetic enzyme for the production of nitric oxide, nitric ... -
Hyperthermia-Induced Changes in EEG of Anesthetized Mice Subjected to Passive Heat Exposure
Labra, Carmen de; Pardo-Vázquez, José L.; Cudeiro, Javier; Rivadulla, Casto (Frontiers, 2021-09-09)[Abstract] Currently, the role of hypothermia in electroencephalography (EEG) is well-established. However, few studies have investigated the effect of hyperthermia on EEG, an important physiological parameter governing ... -
Intracuneate mechanisms underlying primary afferent cutaneous processing in anaesthetized cats
Soto, C.; Aguilar, Juan; Martín-Cora, Francisco; Rivadulla, Casto; Canedo Lamas, Antonio (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 ... -
Intraneural IFG-1 in cryopreserved nerve isografts increase neural regeneration and functional recovery in the rat sciatic nerve
González Porto, Sara Alicia; Doménech, Nieves; Blanco García, Francisco J; Centeno, Alberto; Rivadulla, Casto; Álvarez Jorge, Álvaro; Sánchez Ibáñez, Jacinto; Rendal Vázquez, María Esther (Oxford, 2018-07-27)[Abstract] Background: Insulin-like growth factor 1 (IGF-1) was found to stimulate Schwann cell mitosis. Exogenous IGF-1 may improve nerve regeneration after cryopreservation. Objective: To evaulate the effect of ... -
Magnetic field strength and reproducibility of neodymium magnets useful for transcranial static magnetic field stimulation of the human cortex
Rivadulla, Casto; Foffani, Guglielmo; Oliviero, Antonio (Wiley, 2013-10-11)[Abstract] Objective. The application of transcranial static magnetic field stimulation (tSMS) in humans reduces the excitability of the motor cortex for a few minutes after the end of stimulation. However, when tSMS is ... -
Mixed burst and tonic firing in the thalamus: a study in the feline lateral geniculate nucleus in vivo
Grieve, Kenneth; Rivadulla, Casto; Cudeiro, Javier (Elsevier, 2009)[Abstract] Compounds known to inhibit or disfacilitate cells in cat dorsal lateral geniculate nucleus (dLGN) were applied iontophoretically in vivo. Application of GABA, or agonists of GABAA and GABAB receptors, markedly ... -
Modulatory effects mediated by metabotropic glutamate receptor 5 on lateral geniculate nucleus relay cells
Labra, Carmen de; Rivadulla, Casto; Cudeiro, Javier (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 ...