Synaptic organization of the dorsal lateral geniculate nucleus in the adult hamster

1985 ◽  
Vol 171 (2) ◽  
pp. 223-234 ◽  
Author(s):  
K. -F. So ◽  
G. Campbell ◽  
A. R. Lieberman
Keyword(s):  
Lateral Geniculate Nucleus ◽  
Dorsal Lateral Geniculate Nucleus ◽  
Synaptic Organization ◽  
Lateral Geniculate ◽  
Adult Hamster ◽  
Dorsal Lateral Geniculate

How much feedback from visual cortex to lateral geniculate nucleus in cat: A perspective

2004 ◽  
Vol 21 (4) ◽  
pp. 487-500 ◽  
Author(s):  
JULIAN M.L. BUDD
Keyword(s):  
Lateral Geniculate Nucleus ◽  
Sensory Information ◽  
Dorsal Lateral Geniculate Nucleus ◽  
Synaptic Organization ◽  
Lateral Geniculate ◽  
Order Of Magnitude ◽  
Efferent Neurons ◽  
Cortical Synapses ◽  
Corticothalamic Feedback ◽  
Dorsal Lateral Geniculate

Corticothalamic feedback is believed to play an important role in selectively regulating the flow of sensory information from thalamus to cortex. But despite its importance, the size and nature of corticothalamic pathway connectivity is not fully understood. In light of recent empirical data, the aim of this paper was to quantify the contribution of area 17 axon connectivity to the synaptic organization of A-laminae in dorsal lateral geniculate nucleus (dLGN) in cat, the best studied corticothalamic pathway. Numerical constraints indicate that most corticogeniculate synapses are not formed with inhibitory interneurons. However, the main finding is that there was an order of magnitude difference between estimates of the mean number of cortical synapses per A-laminae neuron based on individual corticogeniculate axon data (12,000–16,000 cortical synapses per cell) than that previously derived from partial reconstructions of the synaptic input to two physiologically identified relay cells (1200–1500 cortical synapses per cell). In an attempt to reconcile these different estimates, parameter variation and comparative analyses suggest that previous work may have overestimated the density of corticogeniculate efferent neurons and underestimated the total number of synapses per geniculate neuron. But as this analysis did not include area 18 corticogeniculate axons innervating A-laminae, the discrepancy between different estimates may be greater and require further explanation. Thus, the analysis presented here suggests geniculate neurons receive on average a greater number of cortical synapses per cell but from far fewer corticogeniculate axons than previously thought.

scholarly journals Synaptic organization of thalamocortical axon collaterals in the perigeniculate nucleus and dorsal lateral geniculate nucleus

2008 ◽  
Vol 508 (2) ◽  
pp. 264-285 ◽  
Author(s):  
Martha E. Bickford ◽  
Haiyang Wei ◽  
Michael A. Eisenback ◽  
Ranida D. Chomsung ◽  
Arkadiusz S. Slusarczyk ◽  
...  
Keyword(s):  
Lateral Geniculate Nucleus ◽  
Dorsal Lateral Geniculate Nucleus ◽  
Synaptic Organization ◽  
Perigeniculate Nucleus ◽  
Lateral Geniculate ◽  
Axon Collaterals ◽  
Dorsal Lateral Geniculate

scholarly journals Synaptic properties of the feedback connections from the thalamic reticular nucleus to the dorsal lateral geniculate nucleus

2020 ◽  
Vol 124 (2) ◽  
pp. 404-417 ◽  
Author(s):  
Peter W. Campbell ◽  
Gubbi Govindaiah ◽  
Sean P. Masterson ◽  
Martha E. Bickford ◽  
William Guido
Keyword(s):  
Lateral Geniculate Nucleus ◽  
Dorsal Lateral Geniculate Nucleus ◽  
Thalamic Reticular Nucleus ◽  
Reticular Nucleus ◽  
Lateral Geniculate ◽  
Dependent Form ◽  
Dorsal Lateral Geniculate ◽  
Feedback Connections ◽  
Spike Firing ◽  
Stimulation Of

The thalamic reticular nucleus (TRN) modulates thalamocortical transmission through inhibition. In mouse, TRN terminals in the dorsal lateral geniculate nucleus (dLGN) form synapses with relay neurons but not interneurons. Stimulation of TRN terminals in dLGN leads to a frequency-dependent form of inhibition, with higher rates of stimulation leading to a greater suppression of spike firing. Thus, TRN inhibition appears more dynamic than previously recognized, having a graded rather than an all-or-none impact on thalamocortical transmission.

The dorsal lateral geniculate nucleus of the normal ferret and its postnatal development

1981 ◽  
Vol 203 (2) ◽  
pp. 189-211 ◽  
Author(s):  
D. Card Linden ◽  
R. W. Guillery ◽  
Josephine Cucchiaro
Keyword(s):  
Postnatal Development ◽  
Lateral Geniculate Nucleus ◽  
Dorsal Lateral Geniculate Nucleus ◽  
Lateral Geniculate ◽  
Dorsal Lateral Geniculate
Sign in / Sign up

Export Citation Format

Share Document