دانلود مقاله ISI انگلیسی شماره 70232
عنوان فارسی مقاله

رابطه بین فعالیت آلفای در حال استراحت و ERPs به دست آمده در طول یک کار توجه انتخابی بسیار پرتقاضا

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
70232 2004 12 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Relationship between resting alpha activity and the ERPs obtained during a highly demanding selective attention task
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : International Journal of Psychophysiology, Volume 54, Issue 3, November 2004, Pages 251–262

کلمات کلیدی
آلفا؛ توجه؛ عملکرد شناختی؛ فعالیت منسجم؛ ERPs؛ EEG
پیش نمایش مقاله
پیش نمایش مقاله رابطه بین فعالیت آلفای در حال استراحت و ERPs به دست آمده در طول یک کار توجه انتخابی بسیار پرتقاضا

چکیده انگلیسی

In spite of previous reports on the relationship between ongoing EEG and ERPs, there remains a lack of agreement on the nature of their nexuses. The aim of the present study was to evaluate the relationship between resting EEG and the ERP components in two groups of healthy subjects with different levels of performance in a highly demanding selective visual attention task. Young adults were classified according to the amount of their correct responses in the task, into high (HP; averaged hits (AH): 86%) and low performance groups (LP; AH: 59%). EEG was recorded during rest, prior to task performance and absolute (AP) and relative power (RP), as well as inter- (rTER) and intrahemispheric (rTRA) correlation were calculated. ERPs during task performance were also obtained and their amplitude and latency measures were assessed. Results showed that individuals with better behavioral performance had a higher synchronization between both hemispheres during rest as well as higher amplitude and shorter latencies of N2 and P3. Principal Component Analysis revealed that alpha2 AP and RP were inversely related to P2 and N2 latency. Higher values of alpha1 and alpha2 rTER were clustered with higher P3 amplitude and shorter reaction time. In conclusion, the differences in the cortical organization of HP and LP at rest (EEG) seem to be associated to the way the brain reacts during information processing (ERPs).

خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.