Results 221 to 230 of about 29,945 (263)

Neural pathways for the control of birdsong production

Journal of Neurobiology, 1997
As in humans, song production in birds involves the intricate coordination of at least three major groups of muscles: namely, those of the syrinx, the respiratory apparatus, and the upper vocal tract, including the jaw. The pathway in songbirds that controls the syrinx originates in the telencephalon and projects via the occipitomesencephalic tract ...
openaire   +2 more sources

[Neural pathways--neural networks].

Orvosi hetilap, 1996
During the past two decades, the introduction of several modern neuroanatomical approaches resulted in a rapidly growing body of informations about neuronal pathways in the central nervous system. Several new neuronal connections between brain areas have been discovered, and the chemical nature (neurotransmitter content) of pathways has been determined
openaire   +1 more source

Variations on the Notch pathway in neural development

Current Opinion in Neurobiology, 2002
Notch signaling allows cells in contact to adopt different fates. Regulation of the Notch pathway allows for the same signaling mechanism to be used in a wide variety of contexts during development. Intracellular activities of the E3 ubiquitin ligases Sel-10 and Neuralized involve proteasome-dependent degradation in the regulation of Notch pathway ...
Nicholas J, Justice, Yuh Nung, Jan
openaire   +2 more sources

Neural pathways mediating septal hyperreactivity

Physiology & Behavior, 1976
Abstract Cuts were made at various positions around the septum to interrupt septal connections with other structures. The effect of these cuts on reactivity was examined 2, 7, and 14 days postoperatively. Animals with anterior or lateral cuts scored significantly higher than control animals on each of the test days.
D J, Albert, S E, Richmond
openaire   +2 more sources

MicroRNA pathways in neural development and plasticity

Current Opinion in Neurobiology, 2010
MicroRNAs contribute significantly to the development, survival, function, and plasticity of neurons. They silence expression of target genes by reducing mRNA stability and translation. Production of microRNAs is controlled via developmental and environmental cues and these small molecules, in concert with classical transcriptional regulators, amplify ...
Ngan K, Vo, Xiaolu A, Cambronne, Richard H, Goodman   +2 more
openaire   +2 more sources

Neural delay in the ascending auditory pathway

Experimental Brain Research, 1981
Evoked responses from the cochlea and cochlear nucleus in the rat were studied using two types of stimuli: (1) bursts of tones or noise, and (2) continuous tones or noise that were amplitude modulated with pseudorandom noise. While the responses to the first type of stimuli were averaged only in the conventional way, the responses to the continuous and
openaire   +2 more sources

Ascending Neural Pathways

1980
To see whether connections between the spinal cord posterior to thoracic levels and supraspinal structures are required for lordosis, hormone-primed female rats were studied before and after complete transection of the spinal cord at low thoracic levels. All sham-operated rats showed strong lordosis reflexes before and after surgery.
openaire   +1 more source

A Convolutional Neural Network-based Model of Neural Pathways in the Retina

2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2019
A variety of the visual functions of the vertebrate retina rely on the interactions between excitation and inhibition within specialized retinal circuitry. The nonlinear properties of these interactions, as well as a large number of cell types and pathways involved, pose a challenge for characterizing many of these retinal functions.
Yasin Zamani, Neda Nategh
openaire   +2 more sources

Horizontal and vertical pathways in neural induction

Trends in Neurosciences, 1991
The regional pattern of the developing nervous system is established early in development. Cues for regionalization of the neuroectoderm might originate from two sources: a vertical signal from the underlying mesoderm, or a signal transmitted horizontally within the neuroectoderm. Recently, these questions have been examined in the Xenapus embryo using
openaire   +2 more sources

Establishment of Pathways in the Developing Neural System

1996
For studying neural development, the chick embryo offers distinct advantages compared to other vertebrate models. The first is the accessibility of the embryos, which survive extensive manipulations in ovo. For example, it has been shown that axons in developing chick limb nerves generally follow stereotyped pathways which are predetermined by the limb
openaire   +3 more sources