Striato-amygdaloid transition area lesions reduce the duration of tonic immobility in the lizard Podarcis hispanica

Brain Research Bulletin
D C DaviesAmparo Novejarque

Abstract

Neuroanatomical data suggest that the lizard striato-amygdaloid transition area is homologous with the mammalian central amygdala. In order to investigate possible functional similarities, tonic immobility was induced in adult lizards and its duration recorded. Each lizard was then randomly assigned to one of three treatments: (1) bilateral striato-amygdaloid transition area lesions, (2) bilateral dorsal cortex lesions or (3) untreated controls. Three days after trial 1, each lizard was subjected to a second trial and the tonic immobility duration recorded. The mean tonic immobility duration in lizards with striato-amygdaloid transition area lesions was significantly shorter (80.5%; p < 0.0033) in trial 2 than in trial 1. There were no inter-trial differences within dorsal cortex-lesioned lizards or untreated controls. There was a significant treatment effect on tonic immobility duration in trial 2 (p < 0.0001). The mean tonic immobility duration of lizards with striato-amygdaloid transition area lesions was significantly shorter than that of dorsal cortex-lesioned lizards (72.2%; p < 0.01) or untreated controls (78.2%; p < 0.01). There was no significant difference in mean tonic immobility duration between dorsal cortex-lesion...Continue Reading

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Citations

Apr 7, 2005·Brain Research Bulletin·Sergio ZamudioGonzalo Flores
Oct 1, 2004·The Journal of Comparative Neurology·Amparo NovejarqueFernando Martínez-García
Aug 9, 2011·Hormones and Behavior·Vicente Sandoval-HerreraSergio R Zamudio
Mar 1, 2012·Neuron·Joseph LeDoux
Jan 26, 2013·Current Biology : CB·Ralph Adolphs
Nov 15, 2014·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Carina M GermerJosé W M Bassani
Jun 25, 2005·The Journal of Comparative Neurology·Nerea Moreno, Agustín González

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