نشریه‌ی علمی مهندسی پزشکی زیستی

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مدل رانش-انتشار برای دو وظیفه‌ی توام حرکتی-شناختی تک‌انتخابی

نوع مقاله : مقاله کامل پژوهشی

نویسندگان

1 دانشجوی دکترا، گروه بیوالکتریک، دانشکده‌ی مهندسی پزشکی، دانشگاه صنعتی امیرکبیر، تهران، ایران

2 استادیار، گروه بیوالکتریک، دانشکده‌ی مهندسی پزشکی، دانشگاه صنعتی امیرکبیر، تهران، ایران

3 استاد، گروه بیوالکتریک، دانشکده‌ی مهندسی پزشکی، دانشگاه صنعتی امیرکبیر، تهران، ایران

10.22041/ijbme.2021.521212.1653

چکیده

توانایی انسان برای انجام چند وظیفه‌ی هم‌زمان در مطالعات بسیاری مورد بررسی قرار گرفته و انجام دو وظیفه‌ی توام همواره یکی از مهم­ترین مسایل شناختی و روان­شناختی بوده است. نحوه‌ی اجرا و تاثیر دو وظیفه‌ی توام روی یک‌دیگر به منظور شناخت کارکرد مغز و تاثیر آن روی خروجی رفتاری در بیماری­های مختلف مورد مطالعه قرار گرفته است. در این مقاله تاثیر سختی بر اجرای دو وظیفه­ی توام گسسته-پیوسته و حرکتی-شناختی مورد بررسی قرار گرفته است. برای این منظور از یک وظیفه­ی گسسته­ی شنیداری به همراه وظیفه­ی پیوسته­ی حرکتی دنبال کردن به عنوان دو وظیفه­ی توام استفاده شده است. تعداد 25 نفر در این آزمایش شرکت کرده و از آن­ها خواسته شده است تا به صورت هم‌زمان به تحریک شنیداری پاسخ داده و عمل دنبال کردن حرکتی را نیز انجام دهند. تاثیر سختی روی میزان خطا و زمان پاسخ با استفاده از مدل رانش-انتشار بررسی شده است. در این مدل چهار پارامتری، پارامتر رانش برای بررسی میزان دشواری وظیفه در نظر گرفته شده است. نتایج پارامتر رانش (مقادیر میانگین 5/0، 3/0 و 2/0) در مدل می­تواند با تغییرات دشواری در سه سطح، در آزمایش هماهنگی خوبی داشته و به عنوان پارامتر دشواری مورد استفاده قرار گیرد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Drift-Diffusion Model for One-Choice Motor-Cognitive Dual-Task

نویسندگان [English]

  • Maryam Sadeghi Talarposhti 1
  • Mohammad Ali Ahmadi-Pajouh 2
  • Frazad Towhidkhah 3

1 Ph.D. Student, Bioelectrics, Biomedical Engineering Department, Amirkabir University of Technology, Tehran, Iran

2 Assistant Professor, Bioelectrics, Biomedical Engineering Department, Amirkabir University of Technology, Tehran, Iran

3 Professor, Bioelectrics, Biomedical Engineering Department, Amirkabir University of Technology, Tehran, Iran

چکیده [English]

Human being is capable of performing more than one task simultaneously. This ability has been investigated in many researches. Performing more than one task at the same time has always been a challenging topic in psychology and human perception fields. The output and the effect of two tasks have been studied in previous researches for understanding the brain’s performance and also the disease origin and the symptoms. The influence of different difficulty levels has been explored via discrete-continuous motor-cognitive dual-task (DT). To this aim, a manual tracking task combined with discrete auditory stimuli to establish DT procedure. Twenty-five participants in this paradigm were asked to track the target on screen while reacting to the auditory task at the same time. Two levels of difficulty in manual tracking plus a single auditory task (ST) were considered for the experiment. The variability of output via different difficulties was investigated by analyzing factors of error rate and the response time (RT). For this analysis, a Drift Diffusion Model (DDM) method was used. In this 4-parameter model, the drift parameter is assumed to show the difficulty levels. The results show that by applying different drift rates (the average of 0.5, 0.3, and 0.2), the model is consistent with experimental output RT and the drift factor has the potential to be considered as the difficulty factor in the DT procedure.

کلیدواژه‌ها [English]

  • Dual-Task
  • Motor-Cognitive
  • Tracking
  • Auditory
  • Drift Diffusion Modeling
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نشریه‌ی علمی مهندسی پزشکی زیستی
دوره 14، شماره 4
بهمن 1399
صفحه 333-344
فایل ها
سابقه مقاله
  • تاریخ دریافت: 26 آذر 1399
  • تاریخ بازنگری: 19 بهمن 1399
  • تاریخ پذیرش: 19 بهمن 1399
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