تاثیر تمرکز توجه درونی و بیرونی بر تغییرات الکتروانسفالوگرافی در مهارت پرتاب دارت

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار، دانشگاه تربیت دبیر شهید رجایی،تهران، ایران

2 استادیار، دانشگاه تربیت دبیر شهید رجایی،تهران، ایران.

3 کارشناس ارشد رفتار حرکتی دانشگاه تربیت دبیر شهید رجایی،تهران، ایران

چکیده

مقدمه: هدف از اجرای تحقیق حاضر تعیین تأثیر تمرکز درونی و بیرونی توجه بر تغییرات الکتروانسفالوگرافی در مهارت پرتاپ دارت بود. روش: 14 نفر (6 زن و 8 مرد؛ میانگین سنی: 15/23 سال) از دانشجویان دانشگاه تربیت دبیر شهید رجایی به صورت داوطلبانه در این تحقیق شرکت کردند. شرکت­کنندگان به منظور حذف اثر ترتیب استفاده از راهبرد توجهی به روش موازنه متقابل به طور تصادفی در دو گروه قرار گرفتند، گروه اول، ابتدا پرتاب دارت را با رویکرد توجهی درونی و سپس بیرونی انجام دادند و گروه دوم، رویکرد تمرکز توجه درونی را پس از تمرکز توجه بیرونی استفاده کردند (7 دسته کوشش سه تایی). امواج مغزی شرکت­کنندگان در سه حالت چشم باز (استراحت)، اجرای مهارت با دستورالعمل­های تمرکز توجه درونی و بیرونی توسط دستگاه الکتروانسفالوگرافی ثبت گردید و توسط نرم­افزار نروگاید به داده­های کمی تبدیل شد و از بین کانال های مذکور، فعالیت امواج آلفا و بتا در نواحی مرکزی و آهیانه­ای جهت تجزیه و تحلیل انتخاب شد. یافته­ ها: نتایج آزمون تحلیل واریانس در اندازه­های تکراری نشان داد که لگاریتم توان مطلق موج آلفا در منطقه C4 در وضعیت تمرکز توجه بیرونی و در دو منطقه P3 و P4 در وضعیت تمرکز توجه درونی و بیرونی کاهش معناداری را نسبت به وضعیت استراحت نشان دادند، در حالیکه بین لگاریتم توان مطلق موج آلفا در وضعیت تمرکز توجه درونی و بیرونی تفاوت معناداری وجود نداشت. در نهایت اینکه، لگاریتم توان مطلق موج بتا در وضعیت تمرکز توجه درونی در منطقه P4 به طور معناداری بیشتر از وضعیت تمرکز توجه بیرونی بود. افزایش توان موج بتا در منطقه P4 در تمرکز توجه درونی نشان دهنده تمرکز بیشتر بر حرکات بدن در حین اجراست که از برتری راهبرد تمرکز توجه درونی در افراد مبتدی حمایت می­کند.  

کلیدواژه‌ها


عنوان مقاله [English]

The Effect of Internal and External Focus of Attention on EEG Changes in Darts Throwing Skill

نویسندگان [English]

  • FARZANE HATAMI 1
  • Farshid Tahmasbi 2
  • HASAN HADI 3
1 Associate Professor, Shahid Rajaee Teacher Training University, Tehran, Iran.
2 Associate Professor, Shahid Rajaee Teacher Training University, Tehran, Iran.
3 Chamachaee, M.A. Of Motor Behavior, Shahid Rajaee Teacher Training University, Tehran, Iran
چکیده [English]

Introduction: The purpose of present study, was to examine the effects of internal and external focus of attention on EEG changes in darts throwing skill. Methods: 14 students of Tehran Shahid Rajaee Teacher Training University (6 female and 8 male; mean age: 23.13 years) voluntarily participated in this study. Order of attentional strategy was counterbalanced across participants and they randomly divided into the two groups: one group is performed dart throwing internally, followed by external focus of attention, and the other use internal followed external focus of attention. Participants’ Brain Waves were recorded by EEG in three conditions, open eye resting and perform dart throw with internally and externally focus of attention and were transferred to quantitative data by Neuro-guide Software. Alpha and beta band cortical activity in central and parietal brain area were selected. Findings: Results of repeated measures ANOVA revealed that log of absolute power of alpha band in externally focus of attention condition in C3 and in internally and externally focus of attention conditions in P3 and P4 brain areas were significantly lower than rest condition while there were no significant differences between two internal and external focus of attention conditions. In addition, log of absolute power of beta in internally focus of attention condition in P4 was significantly greater than externally focus of attention condition. Increasing beta power in P4 in internal focus of attention indicates greater focus on body movements during performance, which supports the superiority of internal focus of attention strategy in beginners

کلیدواژه‌ها [English]

  • Internal and External Focus of Attention
  • Electroencephalography
  • Darts throwing skill
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