Abstract：
:In acute cats deeply anesthetized with Nembutal, monosynaptic excitatory postsynaptic potentials (EPSPs) triggered by stimulation of the ventrolateral (VL) thalamic nucleus and the pes pedunculus were recorded in large pyramidal tract cells (PT cells). Deep anesthesia, low intensities of stimulation and an averaging technique were used in order to get VL and recurrent EPSPs free of polysynaptic potentials. Comparison of the time course of both EPSPs revealed a much faster rise time and shorter half-width for VL EPSPs than for recurrent EPSPs. This would suggest a more proximal location for VL synaptic contacts than for recurrent ones with respect to the soma of PT cells. The separation of the sites of origin of both EPSPs is further suggested by their almost perfect linear summation. It is suggested that VL EPSPs are produced on the apical dendritic tree, while recurrent EPSPs could originate on the basilar dendritic branches.
journal_name
Brain Resjournal_title
Brain researchauthors
Deschênes M,Labelle A,Landry Pdoi
10.1016/0006-8993(79)90598-5subject
Has Abstractpub_date
1979-01-05 00:00:00pages
37-46issue
1eissn
0006-8993issn
1872-6240pii
0006-8993(79)90598-5journal_volume
160pub_type
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