تأثیر تحریک الکتریکی فراجمجمه ای بر توجه انتخابی در شرایط تکلیف دوگانه

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار رفتار حرکتی دانشگاه شهید چمران اهواز

2 کارشناسی ارشد رفتار حرکتی، دانشگاه شهید چمران اهواز

چکیده

پژوهش حاضر با هدف بررسی اثر تحریک الکتریکی فراجمجمه­ای بر توجه انتخابی در شرایط تکلیف دوگانه انجام گرفت. این پژوهش از نوع نیمه تجربی بود. بدین منظور تعداد 28 نفر از دانشجویان دانشگاه شهید چمران اهواز با میانگین سنی 46/2±32/25 سال به صورت نمونه­گیری در دسترس انتخاب، و سپس به طور تصادفی به دو گروه آزمایشی و شم تقسیم شدند. از تمامی شرکت­کنندگان آزمون تکلیف دوگانه اثر استروپ قبل و بعد از تحریک الکتریکی فراجمجمه­ای به عمل آمد. این آزمون شامل چهار فاصله زمانی 50، 100، 300 و 900 هزارم ثانیه بین دو محرک در سه حالت اثر استروپ در شرایط تکلیف دوگانه بود. نتایج آزمون تحلیل واریانس مرکب نشان داد که میانگین زمان واکنش گروه آزمایشی به طور معناداری از گروه شم بهتر بود؛ در نتیجه تحریک الکتریکی قطعه پیش­پیشانی قشر مغز باعث کاهش اثر دوره بی­پاسخی روانشناختی می­شود. پس تحریک الکتریکی، ظرفیت توجه یا سرعت پردازش اطلاعات را در انسان بهبود می­دهد.

کلیدواژه‌ها


عنوان مقاله [English]

The Effect of Transcranial Direct Current Stimulus on Selective Attention in Dual Task Paradigm

نویسندگان [English]

  • Rasool Abedanzadeh 1
  • Saeed Alboghobish 2
1
2
چکیده [English]

The current study aimed to investigate the effect of transcranial direct current stimulus on selective attention in dual task paradigm. By semi-experimental method 28 students of Shahid Chamran University of Ahvaz were recruited (mean age: 25.32±2.46) by at available sampling method and assigned into experimental and Sham equally groups. Participants were asked to perform dual task test of Stroop’s effect  before and after transcranial stimulus. The test included four stimulus onset synchronized of 50, 100, 300 and 900 thousandth of a second between two stimuli in three Stroop’s effect conditions with dual task paradigm. The results of the mix analysis of variance revealed that the mean of reaction time in experimental group was better than the other one (p<0.05), therefore, it can result that the transcranial stimulus of prefrontal cortex method decreased the effect of psychological refractory period. Thus this method can improve the capacity of selective attention or information process in humankind

کلیدواژه‌ها [English]

  • Psychological refrectory period
  • Stroop’s effect
  • Prefrontal cortex
  • Information proccecing
  • Reaction Time
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دوره 8، شماره 3
آبان 1396
صفحه 1-14
  • تاریخ دریافت: 30 آبان 1396
  • تاریخ بازنگری: 30 بهمن 1396
  • تاریخ پذیرش: 26 آذر 1396
  • تاریخ اولین انتشار: 26 آذر 1396
  • تاریخ انتشار: 01 آبان 1396