Cortico-cortical connections of the limbic cortex of the rat.
By means of the retrograde transport of fluorescent tracers (Fast Blue, True Blue, Fluorogold and Diamidino Yellow), the cortico-cortical connections of prelimbic, insular, anterior and posterior cingulate (retrosplenial) areas have been studied. Our results demonstrate that there are, in the cortex of the adult rat, a few cells which have branched axons with connections in the ipsilateral hemisphere (associational neurons) or in the contralateral hemisphere (callosal neurons). The callosal neurons could be separated into two categories: "double callosal" neurons which project both axon collaterals to two cortical areas of the contralateral hemisphere, and "associational-callosal" neurons which send axon collaterals to both hemispheres.
Audinat
E
E
Laboratoire de Neurobiologie, CNRS-UA 1121, Université Paris-Sud, Orsay, France.
Condé
F
F
Crépel
F
F
D000818:Animals; D001931:Brain Mapping; D003337:Corpus Callosum / Q000166:cytology*; D005260:Female; D005456:Fluorescent Dyes; D005625:Frontal Lobe / Q000166:cytology*; D008032:Limbic System / Q000166:cytology*; D009434:Neural Pathways / Q000166:cytology; D051381:Rats; D011919:Rats, Inbred Strains
D005456:Fluorescent Dyes