کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7292156 1474225 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mental rotation of letters, body parts and scenes during whole-body tilt: Role of a body-centered versus a gravitational reference frame
ترجمه فارسی عنوان
چرخش روحانی حروف، قطعات بدن و صحنه ها در طول شیب کامل بدن: نقش بدن محور در برابر یک قاب مرجع گرانشی
کلمات کلیدی
2300، 2340، شیب بدن، قاب مرجع، پردازش شناختی، چرخش روحی، تجسم،
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب شناختی
چکیده انگلیسی
It is known that in mental-rotation tasks, subjects mentally transform the displayed material until it appears “upright” and then make a judgment. Here we evaluate, by using three typical mental rotation tasks with different degrees of embodiment, whether “upright” is coded to a gravitational or egocentric reference frame, or a combination of both. Observers stood erect or were whole-body tilted by 60°, with their left ear down. In either posture, they saw stimuli presented at different orientation angles in their frontal plane: in condition LETTER, they judged whether the stimuli were normal or mirror-reversed letters, in condition HAND whether they represented a left or a right hand, and in condition SCENE whether a weapon laid left or right in front of a displayed person. Data confirm that reaction times are modulated by stimulus orientation angle, and the modulation curve in LETTER and HAND differs from that in SCENE. More importantly, during 60° body tilt, the modulation curve shifted 12° away from the gravitational towards the egocentric vertical reference; this shift was comparable in all three conditions and independent of the degree of embodiment. We conclude that mental rotation in all conditions relied on a similar spatial reference, which seems to be a weighted average of the gravitational and the egocentric vertical, with a higher weight given to the former.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Human Movement Science - Volume 40, April 2015, Pages 352-358
نویسندگان
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