Spatial-specificity of single-units in the hippocampal formation of freely moving homing pigeons

Hippocampus ◽  
2005 ◽  
Vol 15 (1) ◽  
pp. 26-40 ◽  
Author(s):  
Jennifer J. Siegel ◽  
Douglas Nitz ◽  
Verner P. Bingman
Keyword(s):  
Hippocampal Formation ◽  
Single Units ◽  
Homing Pigeons ◽  
Freely Moving ◽  
Spatial Specificity

scholarly journals Theta Phase Classification of Interneurons in the Hippocampal Formation of Freely Moving Rats

2011 ◽  
Vol 31 (8) ◽  
pp. 2938-2947 ◽  
Author(s):  
A. Czurko ◽  
J. Huxter ◽  
Y. Li ◽  
B. Hangya ◽  
R. U. Muller
Keyword(s):  
Hippocampal Formation ◽  
Freely Moving Rats ◽  
Phase Classification ◽  
Freely Moving ◽  
Theta Phase

scholarly journals Cortical epileptogenesis of slowly kindled freely moving rats

2014 ◽  
Vol 60 (6) ◽  
pp. 249-253
Author(s):  
K. Orbán-Kis ◽  
Iringó Száva ◽  
T. Szilágyi
Keyword(s):  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Hippocampal Formation ◽  
Field Potential ◽  
Bipolar Electrode ◽  
Freely Moving Rats ◽  
Spontaneous Seizures ◽  
Freely Moving ◽  
Negative Field

Abstract Objective. Epilepsy is a neurological disorder that can be caused by many underlying pathologies. The epileptic and interictal manifestations that appear during the progression of chronic epilepsy are still not understood completely. One of the most frequent forms of this disease is temporal lobe epilepsy in which is clear involvement of the hippocampal formation. In order to study the electrografic progression of untreated seizures we used amygdala kindling in freely moving rats. Methods. Seven animals were implanted with bilateral hippocampal and prefrontal electrodes. A bipolar electrode, implanted in the lateral nuclei of the left amygdala was used for stimulation. The kindled group of animals was stimulated daily with the minimum current intensity needed to reach the afterdischarge threshold. Behavioral changes during kindling were scored according to the Racine scale. Results. The average seizure severity on the Racine scale was 2.6±0.4 by day 6 and 4.4±0.6 by day 20. The first spontaneous seizures appeared after 31 days of stimulation. During spontaneous seizures the preictal spike full width at half maximum increased gradually from 51±4msec to 110±5msec (p < 0.05) whereas the amplitude of the negative field potential deflection increased by 62% (p < 0.05). Conclusions. Our study showed that the progression of temporal lobe epilepsy, as seen in humans, can be reproduced in the kindling model with high fidelity. This study confirms in vivo the increase in preictal spike duration as well as the increase of the amplitude of negative field potential deflection during the preictal period.

Effects of Vaginal Stimulation and Luteinizing Hormone on Hypothalamic Single Units in the Freely Moving Rabbit

1973 ◽  
Vol 11 (2) ◽  
pp. 119-129 ◽  
Author(s):  
B. Dufy ◽  
J.D. Vincent ◽  
C. Bensch ◽  
J.M.A. Faure
Keyword(s):  
Luteinizing Hormone ◽  
Single Units ◽  
Freely Moving ◽  
Vaginal Stimulation
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