Eye tracking for interactive accessibility: a usability analysis of communication interfaces

Arslan, Kaan Sergen
At the late stages of ALS, i.e., Amyotrophic Lateral Sclerosis, individuals may lose their ability to speak, eat, move, and even breathe without ventilator support. Alternative modalities of communication, such as gaze, may have a potential to provide a communication interface that may increase the quality of life in cases as such. This study aims at developing interactive interfaces for gaze-based communication, and it reports a small-scale usability analysis for a comparison of the interfaces. In particular, we focus on two dimensions in the experimental investigation: The interface layout design and gaze recording interfaces. The interface layouts include a virtual QWERTY keyboard, an alphabetical one, as well as a cascades menu. The gaze recording interfaces include a wearable eye tracker and a webcam-based eye tracker. More generally, we focus on the role of the simplicity of the interface, the functionality of it, and the usability, which may be three contradicting aspects of interface design and development.


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Injury of the nervous system, particularly in the spinal cord, impairs the quality of life of the patient by resulting in permanent loss of neurologic function. The main limitation in spinal cord regeneration is the lack of extracellular matrix to guide nerves for functional recovery of the transected nerve tissue. In the present study, a tissue engineered nerve tube was prepared by wrapping neural stem cells (NSCs) on aligned fibers using a micropatterned film with astrocytes aligned along the microgrooves...
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Oxidative stress plays a major role in pathogenesis of atherosclerosis which is responsible for stroke. Glutathione S-transferases (GSTs) detoxify metabolites produced by oxidative stress within the cell and protect the cells against injury. This study aimed to investigate the association of polymorphisms in GSTT1, GSTM1 genes and GST activity with ischemic stroke risk. Patients had almost the same GST activity as that of controls. No significant differences were found between patients and controls in terms...
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Patients with disorders such as spinal cord injury, cerebral palsy and stroke can perform full gait when assisted, which progressively helps them regain the ability to walk. A very common way to create assistive effects is aquatic therapy. Aquatic environment also creates resistive effects desired for increasing muscle activity. Simulating the fluid environment using a robotic system would enable therapists to adjust various fluid parameters so that the therapy is tailored to each patient’s unique state. In...
Peripheral nerve conduits: Technology update
Hasırcı, Nesrin; Arslantunalı Şahin, Damla; Hasırcı, Vasıf Nejat (2014-12-01)
Peripheral nerve injury is a worldwide clinical problem which could lead to loss of neuronal communication along sensory and motor nerves between the central nervous system (CNS) and the peripheral organs and impairs the quality of life of a patient. The primary requirement for the treatment of complete lesions is a tension-free, end-to-end repair. When end-to-end repair is not possible, peripheral nerve grafts or nerve conduits are used. The limited availability of autografts, and drawbacks of the allograf...
Association analysis of glutathione s-transferase omega 1 and omega 2 genetic polymorphisms and ischemic stroke risk in Turkish population
Bilgin, Esra; Adalı, Orhan; Department of Biochemistry (2014)
Stroke is defined as the acute neurological cerebrovascular disease based on interruptions to blood flow in the brain. These interruptions are caused by loss of blood supply due to vessel bursts or vessel blocked by clotting. Atherosclerosis, a main cause of stroke, is blockage of endothelium layer of arteries and losing the flexibility of tissue. The oxidative stress is known as a risk factor for atherosclerosis. The increased free radicals such as reactive oxygen species (ROS) and decreased antioxidant le...
Citation Formats
K. S. Arslan, “Eye tracking for interactive accessibility: a usability analysis of communication interfaces,” Thesis (M.S.) -- Graduate School of Informatics. Cognitive Sciences., Middle East Technical University, 2020.