It is known that the process of perception and recognition of spaces is associated with cognitive and emotional responses. Analyzing and interpreting psychophysiological users´ responses allows for a deeper understanding of how people perceive spaces.
Main techniques of direct recording of brain activity are functional magnetic resonance image (fMRI) and electroencephalogram (EEG). Indirect measures of brain activity are the record of galvanic skin response (GSR), electrocardiography (ECG), temperature, respiratory rate or facial electromyography (EMG). On the other hand, there are other human-behavior tracking technologies, such as eye-tracking, the face-tracking or postural tracking which, used in combination with the above, allow to obtain in a comprehensive manner the unconscious and objective response of persons to events.
LENI Neuroarchitecture Research Group has undertaken several studies about spatial understanding and emotional assessment of architectural spaces linking users´ subjective response through questionnaires with unconscious and objective measurement obtained by registering their psychophysiological signals.
The team has experience in cleaning and preprocessing of psychophysiological signals by specific software prior to statistical treatment (interference elimination, temporal sequencing, extracting bands or components of interest …) as well as programming machine learning models ( neural networks, support vector machine …) for inferring prediction functions from large amounts of data recorded.
Among the unique equipment available to the Laboratory include:
- Multiplatform physiological system TMSI REFA 32 channels + 8 bipolar channels with biomedical sensors for electroencephalogram (EEG), electrocardiography (ECG), electromyography (EMG), Skin conductance (GSR), body temperature (T), Level blood oxygen saturation (SatO2), thoracic / abdominal breathing.
- Portable wireless EEG recorders: StarStim (8 channels) with transcranial stimulation. B-Alert X10 for EEG, ECG and EMG recording (9 channels). 4 COPD – Emotive systems (14 channels).
- Empatica E4 portable equipment for GSR, ECG and T recording.
- Affectiva Q-sensor portable equipment for GSR recording.
- Optical tracking algorithms and sensors capable of feeding back the postural and gestural state of persons.
- Inertial motion sensors capable of monitoring the movement of persons.
- 2D high frequency (300 Hz) eye-tracking system TX300 Tobii for any type of content and monitor platform.
- SMI eye-tracking 2.0 glasses allowing field studies.
- SMI 3D eye-tracking glasses for Virtual Reality allowing eye-tracking in virtual reality systems CAVE and PowerWall.