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Spinal mechanisms of electric organ discharge synchronization in Gymnotus carapo
TLDR
The spatial distribution of CV values within the EBST is proposed to play the main role in synchronizing the electromotoneurons' activity along the spinal cord in Gymnotus carapo. Expand
Sodium-dependent plateau potentials in electrocytes of the electric fish Gymnotus carapo
TLDR
The weakly electric fish Gymnotus carapo emits a triphasic electric organ discharge generated by muscle-derived electrocytes, which is modified by environmental and physiological factors, and its different Na+-dependent currents may be targets for the modifications of the electrophysiological behavior of this fish. Expand
Preparation of Giant Myelin Vesicles and Proteoliposomes to Register Ionic Channels
TLDR
The current recordings from these vesicles prove the validity of these methods and provide significant evidence of the existence of ionic channels in myelin membranes and the possibility that PLP functions as a channel. Expand
Sexual and seasonal plasticity in the emission of social electric signals. Behavioral approach and neural bases
TLDR
The results show that changes of glutamate effects in the PN could explain the seasonal and sexual differences in the generation of SES, and identify sexual and seasonal plasticity of the CNS and explored its underlying mechanisms. Expand
A central pacemaker that underlies the production of seasonal and sexually dimorphic social signals: functional aspects revealed by glutamate stimulation
TLDR
This study shows that the PN is functionally organized in regions in a caudal–rostral axis, besides the previously documented dorsal–ventral division, and revealed the cellular mechanisms that allow the bursting activity underlying chirp production, only in males. Expand
Different voltage‐gated sodium currents are expressed by human neuroblastoma NB69 cells when cultured in defined serum‐free and in astroglial‐conditioned media
TLDR
In conclusion, NB69 cells displayed a slow, “TTX‐resistant,” or a fast, ” TTX‐sensitive” INa in DM and CM, respectively, suggesting that the CM contained diffusible trophic factors of astroglial origin that induced the expression of a different Na+. Expand
Spatial distribution of the medullary command signal within the electric organ of Gymnotus carapo
TLDR
Waveform analysis of unit EODs indicates that doubly innervated electrocytes which are the most relevant for attaining the specific EOD waveform, receive a favored command from the pacemaker nucleus. Expand
N-type Ca2+ channels mediate transmitter release at the electromotoneuron-electrocyte synapses of the weakly electric fish Gymnotus carapo
TLDR
The VDCCs involved in fish peripheral electromotoneuron-electrocyte presynaptic transmitter release are similar to those in amphibian, reptilian and avian peripheral synapses, but differ from mammalian and invertebrate motoneuron terminals. Expand
Voltage-gated potassium conductances in Gymnotus electrocytesAB
Abstract Electrocytes are muscle-derived cells that generate the electric organ discharge (EOD) in most gymnotiform fish. We used an in vitro preparation to determine if the complex EOD of GymnotusExpand
Differential expression of voltage‐gated Ca2+ conductances in human neuroblastoma NB69 cells cultured in defined serum‐free and astrocyte‐conditioned media
TLDR
Voltage‐gated Ca2+ conductances were investigated with the whole‐cell patch‐clamp technique in NB69 human neuroblastoma cells, suggesting that the CM contained diffusible factors secreted by astroglial cells which could induce the appearance of the LVAC and increased HVAC current expression. Expand
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