Relationship between Rhythmic Motor Activity and Plasma Luteinizing Hormone in Ovariectomized Sheep

1981 ◽  
Vol 32 (6) ◽  
pp. 364-369 ◽  
Author(s):  
D.D. Rasmussen ◽  
P.V. Malven
Keyword(s):  
Luteinizing Hormone ◽  
Motor Activity ◽  
Rhythmic Motor

Rhythmic Motor Activity Evoked by NMDA in the Spinal Zebrafish Larva

2006 ◽  
Vol 95 (1) ◽  
pp. 401-417 ◽  
Author(s):  
Jonathan R. McDearmid ◽  
Pierre Drapeau
Keyword(s):  
Motor Activity ◽  
Zebrafish Larva ◽  
Rhythmic Motor

scholarly journals Genetic study of motor functions in Drosophila melanogaster

2012 ◽  
Vol 10 (1) ◽  
pp. 51-61 ◽  
Author(s):  
Sergey A Fedotov ◽  
Julia V Bragina ◽  
Nataliya G Besedina ◽  
Larisa V Danilenkova ◽  
Elena A Kamysheva ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Motor Activity ◽  
Genomic Dna ◽  
Molecular Mechanisms ◽  
Central Pattern Generators ◽  
Courtship Song ◽  
P Element ◽  
Rhythmic Motor ◽  
Pattern Generators ◽  
First Time

To investigate molecular mechanisms of central pattern generators (CPG s) functioning, we carried out a screening of collection of Drosophila P-insertional mutants for strong deviations in locomotion and courtship song. In 21 mutants, the site of the P-insertion was localized by sequencing of the fragments of genomic DNA flanking the P-element. Bioinformational analysis revealed a list of candidate genes, potential players in development and functioning of CPG s. Possible involvement of certain identified genes in rhythmic motor activity is suggested for the first time (CG15630, Map205).

The central nervous origin of the swimming motor pattern in embryos of Xenopus laevis

1982 ◽  
Vol 99 (1) ◽  
pp. 185-196 ◽  
Author(s):  
J. A. Kahn ◽  
A. Roberts
Keyword(s):  
Motor Activity ◽  
Similar Pattern ◽  
Sensory Feedback ◽  
Motor Nerve ◽  
Motor Pattern ◽  
Cycle Period ◽  
Phase Lag ◽  
Nerve Activity ◽  
Rhythmic Motor ◽  
Swimming Pattern

Rhythmic motor nerve activity was recorded in stage 37/38 Xenopus embryos paralysed with curare. The activity was similar to the swimming motor pattern in the following ways: cycle period (40–125 ms), alternation of activity on either side of a segment, rostro-caudal phase lag. Episodes of rhythmic motor activity could be evoked by stimuli that evoke swimming and inhibited by stimuli that normally inhibit swimming. On this basis we conclude that the swimming motor pattern is generated by a central nervous mechanism and is not dependent on sensory feedback. In addition to the swimming pattern, another pattern of motor activity (‘synchrony’) was sometimes recorded in curarized embryos. In this, the rhythmic bursts on either side of a segment occurred in synchrony, and the rhythm period (20–50 ms) was half that in swimming. This was probably not an artifact of curarization as there were indications of a similar pattern in uncurarized embryos. Its function remains unclear.

scholarly journals IDENTIFIED NEURONES INVOLVED IN THE CONTROL OF RHYTHMIC BUCCAL MOTOR ACTIVITY IN THE SNAIL ACHAT1NA FULICA

1992 ◽  
Vol 164 (1) ◽  
pp. 117-133
Author(s):  
MASAYUKI YOSHIDA ◽  
MAKOTO KOBAYASHI
Keyword(s):  
Motor Activity ◽  
Land Snail ◽  
Achatina Fulica ◽  
Experimental Conditions ◽  
Critical Elements ◽  
Rhythmic Motor ◽  
Buccal Ganglia ◽  
Feeding Rhythm ◽  
Taste Stimulation ◽  
Stimulation Of

In the land snail Achatina fulica, it has been suggested that two pairs of cerebral neurones, ventral cerebral distinct neurones (v-CDNs) and Cl neurones, and a pair of buccal motoneurones (Bls) are involved in the control of rhythmic motor activity (RMA) in the buccal ganglia. These neurones, when tonically fired by depolarizing current injection, could individually initiate and maintain RMA in previously quiescent isolated ganglia. The rhythm elicited by v-CDN persisted for several cycles after the firing of v-CDN stopped, while that elicited by Cl or Bl ceased immediately after the firing of these neurones stopped. RMA also occurred spontaneously and could be induced by labial nerve stimulation in a reduced preparation. Nevertheless, such rhythms were not always accompanied by the firing of v-CDN, Cl or BL. Thus, the firing of these neurones appears to be sufficient, but not essential, for rhythm generation in the experimental conditions. Taste stimulation of the lip in semi-intact preparations often induced RMA in the buccal ganglia. However, v-CDN and Bl were not tonically excited by the stimulation. It seemsunlikely that v-CDN and Bl are critical elements in the generation of the feeding rhythm. Cl responded to taste stimuli with excitation after RMA had begun, suggesting that Cl isinvolved in the taste-induced buccal rhythm

scholarly journals Role of astrocytes in rhythmic motor activity

2021 ◽  
Vol 9 (18) ◽  
Author(s):  
Alexia Montalant ◽  
Eva M. M. Carlsen ◽  
Jean‐François Perrier
Keyword(s):  
Motor Activity ◽  
Rhythmic Motor
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