Vinsamlegast notið þetta auðkenni þegar þið vitnið til verksins eða tengið í það: http://hdl.handle.net/1946/30517
Haptic illusions have not been as extensively investigated as visual or auditory illusions. Investigations of haptic illusions could be important for the development of sensory substitution devices. These devices can help those who have experienced some sort of sensory loss to compensate for that loss by conveying sensory information through another sensory modality that is still functional. Two experiments were conducted. Sixteen people took part in experiment 1 and ten in experiment 2. Two types of tactile actuators (tactors) were mounted as close as physically possible in a 4 x 4 array each. The inter-tactor distance differed depending on the tactor type and was 10 and 20 mm center-to-center (c/c), respectively. We tested if it was possible to reliably produce two specific haptic illusions and if results differed between the two tactor types. In both experiments, two tactors were successively activated and participants judged the location of the second tactor in relation to the first tactor. For the first experiment, the illusion was either an up-movement or a down-movement illusion, depending on the frequency of the two successive tactor activations. For experiment 2, the illusion was either horizontal or vertical. The results for the first experiment indicate that it is possible to produce the illusion with one of the tactors reliably. For experiment 2 further testing is required to yield conclusive results. The results of experiment 1 can help develop sensory substitution devices in a more cost effective and practical way.