21 research outputs found

    Placement of the sensor devices.

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    <p>A) placement on the dominant arm-hand and chest of healthy participants, B) bilateral placement on the arms, hands and chest of the stroke patient, C) top view of the placement of the sensor devices on the hand.</p

    Schematic overview of the procedure of pattern recognition (1 of the 36 signals is shown).

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    <p>A) Systematic variation in template window length using linear interpolation, example given of 3 of the in total 17 variations in window length, B) Pattern recognition based on 2D convolution, performed for every template window separately, C) Cross-correlation coefficient functions, calculated during pattern recognition, example given of 3 of the in total 17 cross-correlation coefficient functions. Local maxima were identified per cross-correlation coefficient function (marked with red circle) and local maxima with highest cross-correlation of all cross-correlation functions were identified (marked with red square), D) Overview of epochs where the template is recognized, including start and endpoints (in data points, DP), cross-correlation coefficients and relative window length. Red lines mark the places in the sequence of recordings of multiple standardized daily activities were the template is recognized. DP = data point.</p

    Procedure for identifying start and endpoints of task repetitions.

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    <p>The black line represents the summed gyroscope signal of four devices on one person (signal X). The dotted red line represents the threshold. Repetitions were identified using an algorithm making use of a threshold, minimal length of a repetition and minimum distance between two repetitions.</p

    Identification of the activity ‘drinking’ in a recording in the home situation of a healthy participant, including multiple activities of daily living.

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    <p>Panel A shows the superimposed signals (36 in total) of the recording made at home. Panel B displays the pattern recognition using an individual template for the activity ‘drinking’. Both pattern recognition with the complete activity as template and with activity sub-phases as template are shown. The black lines (complete activity) and coloured lines (activity sub-phases) in Panel B mark the locations were the template is recognised in the longer recording.</p

    Identification of the activities ‘drinking’, ‘eating’ and ‘brushing hair’ in a sequence of recordings of multiple standardized daily activities of a stroke patient.

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    <p>Panel A displays the superimposed signals (63 in total) of a recording of a stroke patient while performing three tasks, namely drinking from a cup, eating with knife and fork and brushing hair. Pattern recognition using an individual template is shown for the tasks ‘drinking’ (Panel B), ‘eating’ (Panel C) and ‘brushing hair’ (Panel D). Pattern recognition with the complete task as template and with the task sub-phases as template are both shown. The black lines (complete task) and coloured lines (task sub-phases) in panels B and C mark the places were the template is recognised in the longer recording.</p

    Identification of the activity ‘drinking’ in a sequence of recordings of multiple standardized daily activities of a healthy participant.

    No full text
    <p>Panel A displays the superimposed signals (36 in total) of a recording of an individual while executing three tasks, namely drinking from a cup, eating with knife and fork and brushing hair. Panel B displays the pattern recognition using an individual template and the pattern recognition using a generic template consisting of the mean signal of 30 persons. Both pattern recognition with the complete task as template and task sub-phases as template are shown. The black lines (complete task) and coloured lines (task sub-phases) in Panel B mark the places were the template is recognised in the longer recording.</p

    Identification of the activities ‘eating’ and ‘brushing hair’ in a sequence of recordings of multiple standardized daily activities of a healthy participant.

    No full text
    <p>Panel A displays the superimposed signals (36 in total) of a recording of an individual while executing three tasks, namely drinking from a cup, eating with knife and fork and brushing hair. Panel B shows the pattern recognition using a generic template for the task ‘eating’. Panel C presents pattern recognition using a generic template of the task ‘brushing hair’. Both pattern recognition using the complete task as a template and pattern recognition using task sub-phases as a template are shown. The black lines (complete skill) and coloured lines (skill sub-phases) in panels B and C mark the places were the template is recognised in the longer recording.</p
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