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Mismatch Negativity: Different Water in the Same River
Mismatch Negativity: Different Water in the Same River

... Relations between the MMN and Other ERP Waves The MMN can be distinguished from earlier difference waveforms on several dimensions. The most important earlier waveform is the N1 wave, which often increases in amplitude with a change in the stimulus and therefore shows up in the deviant-standard diff ...
On real-world temporal pattern recognition using Liquid State
On real-world temporal pattern recognition using Liquid State

... input to output. In their basic form they are therefore unsuited for temporal pattern recognition. However, we can patch these techniques up by simply combining various stills into a bigger picture: an input window that hopefully contains enough information for detecting the desired pattern. Statist ...
MAG, Nogo-A and NgR in Hippocampal Development and Regeneration TESIS DOCTORAL
MAG, Nogo-A and NgR in Hippocampal Development and Regeneration TESIS DOCTORAL

... CNS axonal regeneration. The articles that comprise the main body of this thesis are organized transversally to the conceptual structure described above. This responds to the sequence in which the results were obtained, and also to the greater facility of publishing articles that cover a range of as ...
Event-Driven Simulation Scheme for Spiking Neural Networks Using
Event-Driven Simulation Scheme for Spiking Neural Networks Using

... matrix) for storing synaptic delays. This is suited only for handling a fixed number of latencies. In contrast, our simulation needed to support arbitrary synaptic delays. This required that each spike transmitted between two cells is represented internally by two events. The first one (the firing e ...
PDF
PDF

... containing water and maintained at 37-5 °C. Each ring contained about 30 ganglia. After 24 h, half the ganglia were removed from each ring, washed with medium 199 and then cultured for 24 h on collagen-coated coverslips in either a control medium (C) or in medium containing added NGF (N). After fixa ...
Functional Specialization Within the Cat Red Nucleus
Functional Specialization Within the Cat Red Nucleus

... Horn, K. M., M. Pong, S. R. Batni, S. M. Levy, and A. R. Gibson. Functional specialization within the cat red nucleus. J Neurophysiol 87: 469 – 477, 2002; 10.1152/jn.00949.2000. Magnocellular (RNm) and parvicellular (RNp) divisions of the cat red nucleus (RN) project to the cervical spinal cord. RNp ...
Pallidal Discharge Related to the Kinematics of Reaching
Pallidal Discharge Related to the Kinematics of Reaching

... discharge of neurons in either GPe or GPi are predicted to have opposing effects on motor centers, it also is important to examine how these opposing changes in discharge are related to parameters of movement. To date, the only consistent difference that has been found, in both GPe and GPi, is that ...
Neural Mechanisms of Reflex Reversal in Coxo
Neural Mechanisms of Reflex Reversal in Coxo

... particular primary afferents or some branches of each. The inputs not subjected to presynaptic inhibition would use alternative interneuronal pathways, which represent the second level. This second level has been analyzed in different preparations (Jankowska et al. 1967; Reichert and Rowell 1985; Si ...
Here is a link
Here is a link

... nervous system (CNS) functions as well as dysfunctions and diseases with certain patterns of the electroencephalogram (EEG) on an empirical basis. Obviously, this method has been found valuable in clinical practice. Therefore, why should the clinical electroencephalographer study the basic elementar ...
Neural degeneration mutants in the zebrafish, Danio
Neural degeneration mutants in the zebrafish, Danio

... 6). An additional 660 mutants causing abnormal general or localized neural degeneration were identified during the initial screen, and in those mutants cell degeneration is not present in any other tissue. The high frequency of the abnormal cell death phenotype and the apparent lack of visible speci ...
Here - Institute of Cognitive Neuroscience
Here - Institute of Cognitive Neuroscience

... must rely on internal representations of object locations within their environment. Here we attempt to develop a model of the uses of these internal representations in spatial memory, incorporating data from single-unit recording systems, neuroscience and behavioral studies, and describing how each ...
BASAL GANGLIA
BASAL GANGLIA

... Programming of several motor fragments into complex motor routines ...
Document
Document

... could be involved in the epileptiform activity seen in Creutzfeldt-Jakob disease (CJD) [23]. Some studies performed during the late stages of TSE have also indicated altered concentrations of dopamine, norepinephrine and serotonin in scrapie-infected animal models [3, 48]. Additional studies have re ...
BASAL GANGLIA
BASAL GANGLIA

... Programming of several motor fragments into complex motor routines ...
Expression of the Emx-1 and Dlx-1 homeobox genes define three
Expression of the Emx-1 and Dlx-1 homeobox genes define three

... Fig. 2. Fate map of the telencephalic vesicle at stage HH9. (A-C) Dissected brains of quailto-chick chimeras which received homotopic transplants in the telencephalic vesicle (left panel) at the 8- to 9-somite stage and were fixed at E7 (A,C) or E5.5 (B). The grafts (in brown) are revealed with a qu ...
Long lnterfascicular Axon Growth from Embryonic Neurons
Long lnterfascicular Axon Growth from Embryonic Neurons

... to sustain long interfascicular axon growth (LIAG) a general property of all adult fiber tracts? Is the growth in a fiber tract restricted to the types of axons normally present in that tract? And what is the tissuesubstratefor axon growth? In a previous study using a microtransplantation technique ...
Cardiovascular and autonomic modulation by
Cardiovascular and autonomic modulation by

... exercise (53). Oxytocinergic projections from pre-autonomic neurons of the PVN to the NTS and other bulbar areas are involved in both reflex control of the heart and adjustments of the HR during dynamic exercise. Within the solitary-vagal complex (NTS + DMV), OT stimulates autonomic neurons, thereby ...
Conductance-Based Model of the Voltage
Conductance-Based Model of the Voltage

... indicate the importance of controlling outputs of the basal ganglia by STN neurons. Therefore it is crucial to know how activities of STN neurons are regulated. In slice preparations, STN neurons show rhythmic singlespike activities at resting membrane potentials (Beurrier et al. 1999; Bevan and Wil ...
Transitional Probabilities Are Prioritized over Stimulus/Pattern
Transitional Probabilities Are Prioritized over Stimulus/Pattern

... reversal (H-L-H), or (3) first-tone deviants (H-H-L). No MMN can be expected for either of the deviants if MMN was elicited by low-probability tones because none of the deviants include sounds that would not also appear with at least 0.33 probability in the standard triplet. However, previous studie ...
review glutamate and gaba receptor signalling in - lópez
review glutamate and gaba receptor signalling in - lópez

... in recent years. The major excitatory and inhibitory neurotransmitters in the brain, glutamate and GABA, activate both ionotropic (ligand-gated ion channels) and metabotropic (G protein-coupled) receptors, and are generally associated with neuronal communication in the mature brain. However, before ...
Comparison of population coherence of place cells in hippocampal
Comparison of population coherence of place cells in hippocampal

... in accordance with NIH guidelines on the use of experimental animals and were approved by the University of Texas Health Science Center at Houston Institutional Animal Care and Use Committee. Twelve tetrodes were lowered to CA3, and 6 tetrodes were lowered to CA1. We specifically targeted the middle ...
GLIA: LISTENING AND TALKING TO THE SYNAPSE
GLIA: LISTENING AND TALKING TO THE SYNAPSE

... Ca2+ waves can be detected in the retina and in organotypic cultures of the hippocampus30,31, it is not yet certain whether they exist in acutely isolated brain tissue. The events underlying astrocytic Ca2+ wave propagation have been the focus of several studies, which have led to some general concl ...
ch_16_lecture_presentation
ch_16_lecture_presentation

... • “Rest and digest” ...
Chapter 9 Sleep and Biological Rhythms
Chapter 9 Sleep and Biological Rhythms

... Daily rhythms in behavior and physiological processes called circadian rhythms; some are passive responses to changes in illumination, while others are controlled by mechanisms within the organism ► 24 hour period for plants and animals ► Zeitgeber – a stimulus (usually the light of dawn) that reset ...
Predominance of Movement Speed Over Direction in Neuronal
Predominance of Movement Speed Over Direction in Neuronal

... vector. Recently, there is also increasing interest in the representation of movement parameters in neuronal population activity, such as reflected in the intracranial EEG (iEEG). We show that in iEEG, contrasting to what has been previously found on the single neuron level, speed predominates over v ...
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Feature detection (nervous system)

Feature detection is a process by which the nervous system sorts or filters complex natural stimuli in order to extract behaviorally relevant cues that have a high probability of being associated with important objects or organisms in their environment, as opposed to irrelevant background or noise. Feature detectors are individual neurons – or groups of neurons – in the brain which code for perceptually significant stimuli. Early in the sensory pathway feature detectors tend to have simple properties; later they become more and more complex as the features to which they respond become more and more specific. For example, simple cells in the visual cortex of the domestic cat (Felis catus), respond to edges – a feature which is more likely to occur in objects and organisms in the environment. By contrast, the background of a natural visual environment tends to be noisy – emphasizing high spatial frequencies but lacking in extended edges. Responding selectively to an extended edge – either a bright line on a dark background, or the reverse – highlights objects that are near or very large. Edge detectors are useful to a cat, because edges do not occur often in the background “noise” of the visual environment, which is of little consequence to the animal.
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