کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4314833 | 1290050 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Stimulus-induced gamma activity in the electrocorticogram of freely moving rats: The neuronal signature of novelty detection
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب رفتاری
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![عکس صفحه اول مقاله: Stimulus-induced gamma activity in the electrocorticogram of freely moving rats: The neuronal signature of novelty detection Stimulus-induced gamma activity in the electrocorticogram of freely moving rats: The neuronal signature of novelty detection](/preview/png/4314833.png)
چکیده انگلیسی
To investigate the cortical activity pattern associated with the exploration and identification of a novel object we recorded the intracranial electrocorticogram (ECoG) in the barrel cortex of freely moving adult rats using wireless technology. We report here that the exploration and detection of a novel object correlate with a transient increase of synchronized oscillatory activity in the 40-47Â Hz frequency band. This specific cortical activity pattern occurs 200-300Â ms after the first sensory contact with the novel stimulus and decreases in power in the subsequent recording sessions with the same object. During the first explorative session the increase in 40-47Â Hz is associated with a simultaneous decrease in the 30-37Â Hz band, which increased to a stable level already after one session. Our results indicate that synchronized gamma activities in primary sensory cortex may represent the neuronal signature for the detection of a novel object.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Behavioural Brain Research - Volume 199, Issue 2, 16 May 2009, Pages 350-354
Journal: Behavioural Brain Research - Volume 199, Issue 2, 16 May 2009, Pages 350-354
نویسندگان
Damien Lapray, Jürgen Bergeler, Heiko J. Luhmann,