کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4339837 | 1295770 | 2010 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The role of the superior colliculus in predatory hunting
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کلمات کلیدی
APNSubstantia nigra, compact partLGVSCIgSAGPBGMDMLGDMRNIIIFasciculus retroflexusPAGPFCMPTMDLSNCPCNPRCSNRMedial habenula - habenula پزشکیSOM - WHOCun - باThalamus - تالاموسlateral habenula - حنابا جانبیperiaqueductal gray - خاکستری پرآبیDefensive behavior - رفتار دفاعیval - ساعتSuperior colliculus - ستارگان برترbasal ganglia - عقدههای قاعدهایprefrontal cortex - قشر prefrontalSomatosensory cortex - قشر سامهوسنسوریzona incerta - منطقه نامشخصoculomotor nucleus - هسته oculomotorParabigeminal nucleus - هسته Parabigeminalolivary pretectal nucleus - هسته pretectal olivarynucleus reuniens - هسته reunienscuneiform nucleus - هسته خمیدهRhomboid nucleus - هسته رامبیدanterior pretectal nucleus - هسته پیش اتکتومی قدامAggression - پرخاشگریMotor control - کنترل حرکتیsomatomotor cortex - کورتکس سومیوتوتورIce - یخ
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Combining the results of behavioral, neuronal immediate early gene activation, lesion and neuroanatomical experiments, we have presently investigated the role of the superior colliculus (SC) in predatory hunting. First, we have shown that insect hunting is associated with a characteristic large increase in Fos expression in the lateral part of the intermediate gray layer of the SC (SCig). Next, we have shown that animals with bilateral NMDA lesions of the lateral parts of the SC presented a significant delay in starting to chase the prey and longer periods engaged in other activities than predatory hunting. They also showed a clear deficit to orient themselves toward the moving prey and lost the stereotyped sequence of actions seen for capturing, holding and killing the prey. Our Phaseolus vulgaris-leucoagglutinin analysis revealed that the lateral SCig, besides providing the well-documented descending crossed pathway to premotor sites in brainstem and spinal cord, projects to a number of midbrain and diencephalic sites likely to influence key functions in the context of the predatory behavior, such as general levels of arousal, motivational level to hunt or forage, behavioral planning, appropriate selection of the basal ganglia motor plan to hunt, and motor output of the primary motor cortex. In contrast to the lateral SC lesions, medial SC lesions produced a small deficit in predatory hunting, and compared to what we have seen for the lateral SCig, the medial SCig has a very limited set of projections to thalamic sites related to the control of motor planning or motor output, and provides conspicuous inputs to brainstem sites involved in organizing a wide range of anti-predatory defensive responses. Overall, the present results served to clarify how the different functional domains in the SC may mediate the decision to pursue and hunt a prey or escape from a predator.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 165, Issue 1, 13 January 2010, Pages 1-15
Journal: Neuroscience - Volume 165, Issue 1, 13 January 2010, Pages 1-15
نویسندگان
I.C. Furigo, W.F. de Oliveira, A.R. de Oliveira, E. Comoli, M.V.C. Baldo, S.R. Mota-Ortiz, N.S. Canteras,