An evaluation of the Tekscan I-Scan System for the assessment of tongue movement during oral processing of semi-solid foods
Liang, Xinyue (2012) An evaluation of the Tekscan I-Scan System for the assessment of tongue movement during oral processing of semi-solid foods. MRes thesis, University of Nottingham.
The main objective of this dissertation is to evaluate the scope of a commercial pressure sensor device, the Tekscan I-Scan System (Tekscan, South Boston, MA, USA), to study tongue movement whilst eating foods that are predominantly manipulated with the tongue during oral processing. Initially, methodology to use the sensor sheet in mouth had to be developed as this application of the system was novel. To measure tongue pressures the approach of fixing the sensory sheet, wrapped into cling film to protect it from saliva and food residues, to the upper palate was taken. Ten subjects were then asked to consume seven selected semi-liquid / semi-solid commercial food products with the sensor fixed in place. The foods ranged from liquid to gel-like and their textural attributes were analyzed instrumentally. The data sets obtained with the Tekscan I-Scan System included pressure, area and force data over sampling time. Initial and final values, mean values and peak values as well as average values were provided. Area data referred to the pressure cells that had been activated by the probe (attached on the tongue). To assess the scope of the Tekscan I-Scan system relationships between the results from texture analysis and in-vivo measurement were explored through principle component analysis.
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