کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4330029 | 1614248 | 2008 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of early binocular enucleation on auditory and somatosensory coding in the superior colliculus of the rat
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کلمات کلیدی
PSTHAudition - آزمونElectrophysiology - الکتروفیزیولوژیstandard deviation - انحراف معیارDegree - درجهTouch - دست زدن بهreceptive field - زمینه پذیرشReorganization - سازماندهی مجددSuperior colliculus - ستارگان برترSpatial localization - محلی سازی فضاییSpatial representation - نمایندگی فضاییpost-stimulus time histogram - هیستوگرام زمان پس از محرکPlasticity - پلاستیکVision - چشم اندازMultisensory integration - یکپارچگی چندگانه
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The present study aimed at investigating the effects of early visual deprivation (bilateral neonatal enucleation) on auditory and somatosensory coding in the polysensory deep layers of the superior colliculus of the rat. The proportion of cells responding to auditory and somatosensory stimulation and the receptive field properties of single neurons were assessed in both normal and enucleated rats. As expected, in enucleated rats there was a drastic increase in the number of unresponsive units and visual responses could no longer be evoked. Most importantly, the proportion of cells that responded to auditory stimulation was drastically reduced. However, the few cells that remained responsive to auditory stimulation were well tuned to noise stimuli presented in both azimuth and elevation, principally in the contralateral hemifield. Enucleation also increased the proportion of cells responding to somatosensory stimulation, particularly to the vibrissae. Implications in terms of neural plasticity and functionality are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain Research - Volume 1191, 29 January 2008, Pages 84-95
Journal: Brain Research - Volume 1191, 29 January 2008, Pages 84-95
نویسندگان
François Champoux, Benoit A. Bacon, Franco Lepore, Jean-Paul Guillemot,