Artículo de revista
Rats with lesions in anteromedial extrastriate cortex fail to learn a visuosomatic conditional response
Fecha
1987Registro en:
Behavioural Brain Research, Volumen 25, Issue 3, 2018, Pages 221-231
01664328
10.1016/0166-4328(87)90070-2
Autor
Pinto Hamuy, Teresa
Olavarria, Jaime
Guic-Robles, Eliana
Morgues, Monica
Nassal, Omar
Petit, Daniel
Institución
Resumen
The involvement of rat anteromedial extrastriate cortex (area AM, in the anterior portion of area 18b) in the integration of visual and somatic cues was assessed behaviorally. Following restricted bilateral lesions of selected cortical regions, rats were tested on their ability to retain or relearn a conditional visuosomatic discrimination task learned prior to surgery. Two compound, visuosomatic stimuli were used: white or black associated with either one of two degrees of roughness. The use of a guided-response procedure was essential for rats to learn this difficult conditional bimodal task. None of the 6 rats with lesions aimed at area AM retained the habit postoperatively. Four of these rats were incapable of relearning the task after 3 postoperative training series, and they had either extensive lesions of area AM or relatively small, symmetric damage of anterior portions of AM. The remaining two rats with lesions in area AM were able to relearn the task in the second postoperati