Mean GSR of several design activities under different stress levels during a design experiment was calculated to investigate if it can be used as a reliable measure of mental workload. Another measure is Galvanic Skin Response (GSR). The result showed that, during a cognitive design experiment, most of the activities in a design process were performed under low levels of mental stress and there was no correlation between types of design activities and levels of mental stress. The average value of LF/HF of different activities during a design experiment was computed and then clustered into seven levels which represent different levels of mental stress. The LF/HF ratio derived from HRV was used as an indicator of mental stress. Sweat glands are controlled by the sympathetic nervous system ( Martini and Bartholomew, 2003 ) therefore, skin conductance is used as an indication of psychological or physiological arousal. One measure is Heart Rate Variability (HRV). EDA, also known as skin conductance or galvanic skin response (GSR), is a method of measuring the electrical conductance of the skin, which varies with its moisture level. This thesis aims to explore the relation between mental stress/workload and physiological measures and using those measures to identify the correlation between mental stress and design activities. Many physiological measures such as Galvanic Skin Response (GSR), Electrocardiogram (ECG), Electromyogram (EMG), Blood Pressure (BP), Skin Temperature (ST), Blood Volume Pulse (BVP), respiration rate (RIP) and Electroencephalogram (EEG) are used to identify mental stress level (Karthikeyan, Murugappan, & Yaacob, 2011 Lee, Jo, & Lee, 2011 Michon, 1966 Roscoe, 1992 Ryu & Myung, 2005 Wilson, 2002).
For stand-alone setup, use the NeuLog® Graphic Display Bundle (item #369520).Mental stress/workload is now considered as an important element that affects design creativity. For wireless setup, use the NeuLog® Wi-Fi™ Starter Connection Bundle (item #369510).
MEASURE GALVANIC SKIN RESPONSE PC
For hardwired setup, use the NeuLog® PC Starter Connection Bundle (item #369500) or NeuLog® USB Bridge Module (item #369733). Note: Requires connection hardware, which is sold separately. This sensor has 2 measurement modes: conductivity in micro Siemens and arbitrary numbers. The level of the response changes dramatically from one person to another-the user must put his hand on a table, chair, or on his lap and be still. The sensor measures the conductivity of our skin, especially between our fingers the skin response time from the sudden effect is between 0.1 to 0.8 seconds. The GSR, primarily used for experiments in physiology, senses them all. A sudden noise, curious smell, touch, pain, or sounds are just some of the things that trigger these conductivity-changing emotions. It is exactly these changes that the NeuLog® Galvanic Skin Response (GSR) Sensor measures. The tiniest emotional ripples we unconsciously experience affect our skin's conductivity.
For both beginners and advanced users, the NeuLog® data logger sensors offer a simple and flexible solution to collect and analyze the most complex data from your science laboratory experiments or field activities. The next generation of scientific data collection sensors is now available-easier to use, more versatile, and with a lower cost than any other data collection system. Smart, easy, and affordable digital data collection technology for now and the future
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