title: A morphological analysis of neurons in the lateral parabrachial nucleus: an intracellular horseradish peroxidase study in the rat.
abstract: Neurons in the lateral parabrachial nucleus (LPB) of the rat were analyzed by the intracellular horseradish peroxidase method. Sixteen LPB neurons were successfully labeled with HRP injected intracellularly. HRP-labeled LPB neurons were divided into type I (7 neurons) and type II (9 neurons) LPB neurons. Type I LPB neurons, which were activated antidromically by stimulation of the ipsilateral posteromedial ventral nucleus of the thalamus, had long dendrites and a long axon. Type II LPB neurons, which were not activated antidromically by the stimulation of the thalamus, had short dendrites and a short axon. It was concluded that type I LPB neurons were projection neurons, while type II LPB neurons were local circuit neurons.
authors.affiliation: Department of Anatomy, Fourth Military Medical University, Shaanxi, People's Republic of China.
authors.forename: P F
authors.initials: PF
authors.lastname: Luo
authors.forename: J S
authors.initials: JS
authors.lastname: Li
authors.forename: Z R
authors.initials: ZR
authors.lastname: Rao
mesh_terms: D000200:Action Potentials; D000818:Animals; D004558:Electric Stimulation; D005260:Female; D006735:Horseradish Peroxidase; D008297:Male; D011149:Pons / Q000166:cytology* / Q000502:physiology; D051381:Rats; D011919:Rats, Inbred Strains; D013787:Thalamic Nuclei / Q000502:physiology
chemical_list: D006735:Horseradish Peroxidase