Inertial-Magnetic Sensors for Assessing Spatial Cognition in Infants

被引：22

作者：

Campolo, Domenico ^{[1
]}

Taffoni, Fabrizio ^{[2
]}

Formica, Domenico ^{[2
]}

Schiavone, Giuseppina ^{[3
]}

Keller, Flavio ^{[4
]}

Guglielmelli, Eugenio ^{[2
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

[2] Univ Campus Biomed, Biomed Robot & Biomicrosyst Lab, I-00128 Rome, Italy

[3] European Space Agcy, Adv Concepts Team, NL-2200 AG Noordwijk, Netherlands

[4] Univ Campus Biomed, Lab Dev Neurosci, I-00128 Rome, Italy

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 2011年 / 58卷 / 05期

关键词：

Ecological assessment; instrumented toys; infield calibration; neurodevelopmental engineering; EARLY-DIAGNOSIS; CALIBRATION; ACCELEROMETERS; MOVEMENT;

D O I：

10.1109/TBME.2011.2105871

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

This letter describes a novel approach to the assessment of spatial cognition in children. In particular, we present a wireless instrumented toy embedding magneto-inertial sensors for orientation tracking, specifically developed to assess the ability to insert objects into holes. To be used in naturalistic environments (e. g., day cares), we also describe an in-field calibration procedure based on a sequence of manual rotations, not relying on accurate motions or sophisticated equipment. The final accuracy of the proposed system, after the mentioned calibration procedure, is derived by direct comparison with a gold-standard motion tracking device. In particular, both systems are subjected to a sequence of ten single-axis rotations (approximately 90 degrees, back and forth), about three different axes. The rms of the angular error between the two measurements (gold-standard versus proposed systems) was evaluated for each trial. In particular, the average rms error is under 2.. This study indicates that a technological approach to ecological assessment of spatial cognition in infants is indeed feasible. As a consequence, prevention through screening of large number of infants is at reach.

引用

页码：1499 / 1503

页数：5

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