Noncommutative updating of perceived self-orientation in three dimensions.
نویسندگان
چکیده
After whole body rotations around an earth-vertical axis in darkness, subjects can indicate their orientation in space with respect to their initial orientation reasonably well. This is possible because the brain is able to mathematically integrate self-velocity information provided by the vestibular system to obtain self-orientation, a process called path integration. For rotations around multiple axes, however, computations are more demanding to accurately update self-orientation with respect to space. In such a case, simple integration is no longer sufficient because of the noncommutativity of rotations. We investigated whether such updating is possible after three-dimensional whole body rotations and whether the noncommutativity of three-dimensional rotations is taken into account. The ability of ten subjects to indicate their spatial orientation in the earth-horizontal plane was tested after different rotational paths from upright to supine positions. Initial and final orientations of the subjects were the same in all cases, but the paths taken were different, and so were the angular velocities sensed by the vestibular system. The results show that seven of the ten subjects could consistently indicate their final orientation within the earth-horizontal plane. Thus perceived final orientation was independent of the path taken, i.e., the noncommutativity of rotations was taken into account.
منابع مشابه
Norwegian Football Academy Players-Players Self-Assessed Competence, Perfectionism, Goal Orientations and Motivational Climate
Grounded in the theoretical framework of achievement goal theory and perfectionism theory, the purpose of this study was to examine how self-assessed perceived abilities covariance these variables among Norwegian football academy players. 140 adolescent football players participated, representing three football academies. Perceived competence was reported as equivalent to or better than others....
متن کاملThe Effectiveness of Self-regulation Skills in Dimensions of Perceived Competence and Academic Procrastination among Female Students
The present study aimed to determine the effectiveness of self-regulation skills in dimensions of perceived competence and academic procrastination among female students. This study was a quasi-experimental study and was performed as a pretest-posttest with a control group. The study population included female high school students of the second District in Tabriz in the academic year 2020-2021....
متن کاملThe Relationship between EFL Students’ Writing Motivation, Self-Perceived Writing Intelligence, and Attitude toward Written Feedback
The study of individual difference variables in the realm of written feedback is one of the significant lines of research which has been reinvigorated in the last few years. These variables are believed to affect both students’ engagement with feedback and their writing improvement. The present correlational study investi- gated the relationship betw...
متن کاملبررسی ارتباط بین مقابله با سرطان و خودکارآمدی مدیریت علائم، حمایت اجتماعی درکشده، عدم قطعیت و جهتگیری زندگی در زنان مبتلا به سرطان پستان
Introduction: The purpose of this study was to investigate the cancer coping and its relationship with symptom management self-efficacy, perceived social support, uncertainty about life, and life orientation in Iranian breast cancer female survivors. Methods: This study was carried out through a descriptive-analytical cross-sectional method .The data were collected from 150 breast cancer...
متن کاملرابطه مهارت های فراشناختی در یادگیری و جهت گیری هدف با یادگیری خودتنظیم در دانش آموزان دختر دوره دوم متوسطه
The present study aims to investigate the relationship of metacognitive skills in learning and academic goal orientation with self–regulated learning in female high school students of second grade in Ardakan city. This study was a correlational study that carried out in 210 female students who were selected by randomly cluster sampling between female high school students of second grade i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Journal of neurophysiology
دوره 97 4 شماره
صفحات -
تاریخ انتشار 2007