Local circuits for the control of leg movements in an insect

Article Abstract:

Stereotyped movements require neuronal circuits controlling the process to produce impulses in such a manner that it permits a coordinated and sequential movement of the appropriate muscles. In addition, these circuits should also be able to respond to externalstimuli encountered as a consequence of movement. An analysis of locust leg movements discloses certain qualities that reflect general organizational principles, such as the presence of non-spiking and spiking local neurons and the occurence of local processing near a mechanosensory signal.

Analysis, Locusts, Locusts (Insects), Neuromuscular transmission

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Striatal structures, dopamine and the mobility gradient model

Article Abstract:

Ilan Golani's mobility gradient was used in studies conducted on the function of the dorsal striatum, the ventral striatum and the olfactory tubercle. The rules resulting from Golani's approach were assessed in view of brain/behavior relations. It was shown that the Eshkol Wachman descriptions and Golani's approach to animal behavior is useful in the study of brain functions and provide new insights into brain/behavior relations.

Dopaminergic mechanisms

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Tracking neural pathways with MRI

Article Abstract:

Diffusion weighted magnetic resonance imaging (MRI) has been found effective in tracking neural pathways in humans and in experimental animals. In the 1980s, the technique has been employed in finding the distinctions between gray and white matters. The process is done by applying a magnetic field to a tissue that has a pulse of radio frequency energy. MRI application has focused on hydrogen detection.

Usage, Magnetic resonance imaging

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