Distinct but Overlapping Populations of Commissural and GABAergic Neurons in the Dorsal Nucleus of the Little Skate, Raja erinacea

1997 ◽  
Vol 49 (2) ◽  
pp. 99-109 ◽  
Author(s):  
Catharine H. Duman ◽  
David Bodznick
Keyword(s):  
Gabaergic Neurons ◽  
Raja Erinacea ◽  
Dorsal Nucleus

Motor corollary discharge activity and sensory responses related to ventilation in the skate vestibulolateral cerebellum: implications for electrosensory processing

1996 ◽  
Vol 199 (3) ◽  
pp. 673-681 ◽  
Author(s):  
G Hjelmstad ◽  
G Parks ◽  
D Bodznick
Keyword(s):  
Noise Cancellation ◽  
Second Order ◽  
Corollary Discharge ◽  
Parallel Fiber ◽  
Large Percentage ◽  
Principal Function ◽  
Raja Erinacea ◽  
Dorsal Nucleus ◽  
Sensory Responses ◽  
Electrosensory Processing

The dorsal granular ridge (DGR) of the elasmobranch vestibulolateral cerebellum is the source of a parallel fiber projection to the electrosensory dorsal nucleus. We report that the DGR in Raja erinacea contains a large percentage of units with activity modulated by the animal's own ventilation. These include propriosensory and electrosensory units, responding to either ventilatory movements or the resulting electroreceptive reafference, and an additional population of units in which activity is phase-locked to the ventilatory motor commands even in animals paralyzed to block all ventilatory movements. A principal function of processing in the dorsal nucleus is the elimination of ventilatory noise in second-order electrosensory neurons. The existence of these ventilatory motor corollary discharge units, along with other DGR units responsive to ventilatory movements, suggests that the parallel fiber projection is involved in the noise cancellation mechanisms.

Involvement of preoptic estrogen receptive GABAergic neurons in the process of sexual differentiation

1984 ◽  
Vol 104 (4_Supplb) ◽  
pp. S39-S40 ◽  
Author(s):  
G. FLÜGGE ◽  
E. FUCHS ◽  
W. WUTTKE
Keyword(s):  
Sexual Differentiation ◽  
Gabaergic Neurons
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