In contrast, both the NASA-TLX and performance measure were sensitive in differentiating different levels of mental workload. Like the HRV, GSR showed to be sensitive in distinguishing rest and task condition significantly but not sensitive in distinguishing different levels of mental workload. RESULTS: GSR measure was compared to NASA-TLX and HRV measures. GSR, Heart Rate Variability (HRV), and the NASA-TLX were administered prior to, during, and after the tasks. METHOD: Participants were asked to work on visual memory search task with a secondary task of counting with three different levels of difficulty. PARTICIPANTS: A total of 72 Indonesian students with normal visual capability.

OB JECTIVE: To evaluate the sensitivity of Galvanic Skin Response (GSR) in assessing mental workload in Indonesia. In Indonesia, there is a need for a sensitive and affordable mental workload measure. However, these measures need special devices that are relatively expensive and need expertise to analyze the result. ДЄbstract: BACKGROUND: Objective measures have been shown to be equally sensitive in different cultures. The GSR method can be so exact than when calibrated it can identify the most subtle differences between readings. It is like an ohmmeter which is an instrument used to measure the electrical resistance. Authors: Widyanti, Ari * | Hanna, | Muslim, Khoirul | Sutalaksana, Iftikar ZahediДЄffiliations: Department of Industrial Engineering, Laboratory for Work System Design and Ergonomics, Bandung Institute of Technology, Bandung, IndonesiaДЄddress for correspondence: Ari Widyanti, Laboratory for Work System Design and Ergonomics, Department of Industrial Engineering, Bandung Institute of Technology, Ganesha 10, Bandung 40132, Indonesia. The Galvanic Skin Response (GSR) can tell a practitioner or technician the levels of a steady electrical conductance.

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