{"id":52924,"date":"2006-05-06T00:00:00","date_gmt":"2006-05-06T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/bases-morfologicas-y-funcionales-de-la-inhibicion-del-reflejo-auditivo-de-sobresalto\/"},"modified":"2006-05-06T00:00:00","modified_gmt":"2006-05-06T00:00:00","slug":"bases-morfologicas-y-funcionales-de-la-inhibicion-del-reflejo-auditivo-de-sobresalto","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/histologia-animal\/bases-morfologicas-y-funcionales-de-la-inhibicion-del-reflejo-auditivo-de-sobresalto\/","title":{"rendered":"Bases morfologicas y funcionales de la inhibici\u00f3n del reflejo auditivo de sobresalto"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ricardo Jose Gomez Nieto <\/strong><\/h2>\n<p>El reflejo auditivo de sobresalto (ras) es una reacci\u00f3n motora que tienen los organismos vivos ante la presencia de un est\u00edmulo auditivo inesperado y de gran intensidad. El circuito neuronal del ras est\u00e1 formado por las neuronas de la ra\u00edz coclear (nsrc) que proyectan a las neuronas del n\u00facleo reticular pontinocaudal (nrpc) que a su vez inervan las motoneuronas que contraen m\u00fasculos, desencadenando el sobresalto. Una de las modulaciones del ras m\u00e1s interesantes como medida de los mecanismos sensoriomotores del cerebro es la inhibici\u00f3n por est\u00edmulo previo (iep) del ras. La iep es una dr\u00e1stica disminuci\u00f3n de la respuesta de sobresalto cuando el est\u00edmulo auditivo es precedido por un pre-est\u00edmulo d\u00e9bil que no desencadena el sobresalto. El conocimiento del circuito neuronal que media la iep puede ser usado para comprender la fisiopatolog\u00eda de enfermedades neuropsiqui\u00e1tricas que cursan con alteraci\u00f3n de este fen\u00f3meno, tales como la esquizofrenia y la enfermedad de huntington. Sin embargo, este circuito a\u00fan no se conoce con exactitud.  si un pre-est\u00edmulo auditivo provoca este fen\u00f3meno inhibitorio, debe existir una conexi\u00f3n entre alg\u00fan n\u00facleo de la v\u00eda auditiva y alguno de los componentes del circuito del ras, las nsrc o el nrpc. La mayor\u00eda de los autores consideran que la inhibici\u00f3n del ras se produce a nivel del nrpc a trav\u00e9s de un circuito largo que no explica particularidades de la iep como que pueda suceder para intervalos entre los est\u00edmulos (isi) menores de 50 ms.  nuestro estudio describe una proyecci\u00f3n directa desde el n\u00facleo ventral del cuerpo trapezoide (nvct) a las nsrc, empleando t\u00e9cnicas inmunohistoqu\u00edmicas y de trazado de las v\u00edas nerviosas para estudiar los terminales del nvct a microscopia \u00f3ptica, electr\u00f3nica y confocal. Los contactos sin\u00e1pticos sobre las nsrc son sim\u00e9tricos con ves\u00edculas peque\u00f1as y redondas, contienen acetilcolina como neurotransmisor y proceden de neuronas no olivococleares del nvct. Esta v\u00eda dir<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Bases morfologicas y funcionales de la inhibici\u00f3n del reflejo auditivo de sobresalto<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Bases morfologicas y funcionales de la inhibici\u00f3n del reflejo auditivo de sobresalto <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ricardo Jose Gomez Nieto <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Salamanca<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 05\/06\/2006<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li> Lopez Garcia M\u00aa Dolores<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  Caminos benito M\u00aa elena <\/li>\n<li> Rubio valero M\u00aa eulalia (vocal)<\/li>\n<li> Lopez alburquerque Jos\u00e9 tomas (vocal)<\/li>\n<li>josep Valls sole (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ricardo Jose Gomez Nieto El reflejo auditivo de sobresalto (ras) es una reacci\u00f3n motora que tienen los 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