Comparative study of inter-and intrahemispheric cortico-cortical connections in gerbil auditory cortex

Topographic distributions and laminar pattern of cortico-cortical projections from the primary auditory field (AI), anterior auditory field (AAF), dorsoposterior field (DP), ventroposterior field (VP), dorsal field (D) and ventral field (V) were studied in relation to tonotopic maps in combined anat...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	THOMAS,HARDY, LÓPEZ,VLADIMIR
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2003
Materias:	auditory cortex cortical connections laminar patterns fluorescent tracer-retrograde labeling
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602003000200006
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0716-97602003000200006
record_format	dspace
spelling	oai:scielo:S0716-976020030002000062003-11-19Comparative study of inter-and intrahemispheric cortico-cortical connections in gerbil auditory cortexTHOMAS,HARDYLÓPEZ,VLADIMIR auditory cortex cortical connections laminar patterns fluorescent tracer-retrograde labeling Topographic distributions and laminar pattern of cortico-cortical projections from the primary auditory field (AI), anterior auditory field (AAF), dorsoposterior field (DP), ventroposterior field (VP), dorsal field (D) and ventral field (V) were studied in relation to tonotopic maps in combined anatomical, electrophysiological and 2-deoxyfluoro-D-glucose (2DG) experiments. Distributions of axons were examined by means of retrogradely-transported fluorescent tracer Fast Blue (FB) injected in the primary (AI) and anterior (AAF) auditory field. Injections of fluorescent tracer were placed in electrophysiologically-identified locations of AI and AAF. Neurons in AAF, DP, VP and V project to AI in the ipsilateral hemisphere. This area also receives projections from AI, AAF and D from the contralateral hemisphere. In AI, DP and VP, neurons are connected with AAF in the ipsilateral hemisphere and AI and AAF in the opposite hemisphere. In all cases, patches of labeling are distributed along 2DG bands oriented parallel to the isofrequency line. Substantial numbers of retrogradedly labeled neurons with similar best frequencies (BFs) were observed in the ipsilateral and moderate to scant numbers in the contralateral hemisphere. In general, regions near the injection sites receive more densely-labeled projections than do more distant targets. In both hemispheres, the supragranular layer III contains the greatest concentration of cortico-cortical cells bodies; the granular and infragranular layer V contains a somewhat lower concentration.info:eu-repo/semantics/openAccessSociedad de Biología de ChileBiological Research v.36 n.2 20032003-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602003000200006en10.4067/S0716-97602003000200006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	auditory cortex cortical connections laminar patterns fluorescent tracer-retrograde labeling
spellingShingle	auditory cortex cortical connections laminar patterns fluorescent tracer-retrograde labeling THOMAS,HARDY LÓPEZ,VLADIMIR Comparative study of inter-and intrahemispheric cortico-cortical connections in gerbil auditory cortex
description	Topographic distributions and laminar pattern of cortico-cortical projections from the primary auditory field (AI), anterior auditory field (AAF), dorsoposterior field (DP), ventroposterior field (VP), dorsal field (D) and ventral field (V) were studied in relation to tonotopic maps in combined anatomical, electrophysiological and 2-deoxyfluoro-D-glucose (2DG) experiments. Distributions of axons were examined by means of retrogradely-transported fluorescent tracer Fast Blue (FB) injected in the primary (AI) and anterior (AAF) auditory field. Injections of fluorescent tracer were placed in electrophysiologically-identified locations of AI and AAF. Neurons in AAF, DP, VP and V project to AI in the ipsilateral hemisphere. This area also receives projections from AI, AAF and D from the contralateral hemisphere. In AI, DP and VP, neurons are connected with AAF in the ipsilateral hemisphere and AI and AAF in the opposite hemisphere. In all cases, patches of labeling are distributed along 2DG bands oriented parallel to the isofrequency line. Substantial numbers of retrogradedly labeled neurons with similar best frequencies (BFs) were observed in the ipsilateral and moderate to scant numbers in the contralateral hemisphere. In general, regions near the injection sites receive more densely-labeled projections than do more distant targets. In both hemispheres, the supragranular layer III contains the greatest concentration of cortico-cortical cells bodies; the granular and infragranular layer V contains a somewhat lower concentration.
author	THOMAS,HARDY LÓPEZ,VLADIMIR
author_facet	THOMAS,HARDY LÓPEZ,VLADIMIR
author_sort	THOMAS,HARDY
title	Comparative study of inter-and intrahemispheric cortico-cortical connections in gerbil auditory cortex
title_short	Comparative study of inter-and intrahemispheric cortico-cortical connections in gerbil auditory cortex
title_full	Comparative study of inter-and intrahemispheric cortico-cortical connections in gerbil auditory cortex
title_fullStr	Comparative study of inter-and intrahemispheric cortico-cortical connections in gerbil auditory cortex
title_full_unstemmed	Comparative study of inter-and intrahemispheric cortico-cortical connections in gerbil auditory cortex
title_sort	comparative study of inter-and intrahemispheric cortico-cortical connections in gerbil auditory cortex
publisher	Sociedad de Biología de Chile
publishDate	2003
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602003000200006
work_keys_str_mv	AT thomashardy comparativestudyofinterandintrahemisphericcorticocorticalconnectionsingerbilauditorycortex AT lopezvladimir comparativestudyofinterandintrahemisphericcorticocorticalconnectionsingerbilauditorycortex
_version_	1718441351860715520

Comparative study of inter-and intrahemispheric cortico-cortical connections in gerbil auditory cortex

Ejemplares similares