Searched for: subject:"Perception"
(1 - 20 of 29)

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Liu, Y. (author), Toet, A. (author), Krone, T. (author), van Stokkum, R. (author), Eijsman, S. (author), van Erp, J.B.F. (author)
The affective appraisal of odors is known to depend on their intensity (I), familiarity (F), detection threshold (T), and on the baseline affective state of the observer. However, the exact nature of these relations is still largely unknown. We therefore performed an observer experiment in which participants (N = 52) smelled 40 different odors ...
article 2020
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Toet, A. (author), Eijsman, S. (author), Liu, Y. (author), Donker, S. (author), Kaneko, D. (author), Brouwer, A.M. (author), van Erp, J.B.F. (author)
Introduction: he main purpose of this study was to investigate the overall relation between the mean (at the nomothetic or group level) subjective valence and arousal ratings for odors. Although well established in other sensory modalities (e.g., visual, auditory, gustatory, tactile), this relation has not previously been investigated for odors...
article 2020
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Liu, Y. (author), Toet, A. (author), Krone, T. (author), van Stokkum, R. (author), Eijsman, S. (author), Erp, J.B.F.van (author)
The affective appraisal of odors is known to depend on their intensity (I), familiarity (F), detection threshold (T), and on the baseline affective state of the observer. However, the exact nature of these relations is still largely unknown. We therefore performed an observer experiment in which participants (N = 52) smelled 40 different odors ...
article 2020
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Toet, A. (author), Eijsman, S. (author), Liu, Y. (author), Kaneko, D. (author), Brouwer, A.M. (author), van Erp, J.B.F. (author)
We recently introduced the EmojiGrid as an intuitive graphical self-report tool to measure food­evoked valence and arousal. The EmojiGrid is a Cartesian grid, labeled with facial icons (emoji) expressing different degrees of valence and arousal. The lack of verbal labels makes it a valuable, language-independent tool for cross-cultural...
public lecture 2019
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Willemse, C.J.A.M. (author), Toet, A. (author), van Erp, J.B.F. (author)
Social touch forms an important aspect of the human non-verbal communication repertoire, but is often overlooked in human–robot interaction. In this study, we investigated whether robot-initiated touches can induce physiological, emotional, and behavioral responses similar to those reported for human touches. Thirty-nine participants were...
article 2017
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Koijck, L.A. (author), Toet, A. (author), van Erp, J.B.F. (author)
Previous research has shown that odorants consistently evoke associations with textures and their tactile properties like smoothness and roughness. Also, it has been observed that olfaction can modulate tactile perception. We therefore hypothesized that tactile roughness perception may be biased towards the somatosensory connotation of an...
article 2015
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van Erp, J.B.F. (author), Toet, A. (author)
Touch is our primary non-verbal communication channel for conveying intimate emotions and as such essential for our physical and emotional wellbeing. In our digital age, human social interaction is often mediated. However, even though there is increasing evidence that mediated touch affords affective communication, current communication systems ...
article 2015
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van Erp, J.B.F. (author), Willemse, C.J.A.M. (author), Janssen, J.B. (author), Toet, A. (author)
Although Tangible User Interfaces are considered an intuitive means of human-computer interaction, they oftentimes lack the option to provide active feedback. We developed ‘Sensators’: generic shaped active tangibles to be used on a multi-touch table. Sensators can represent digital information by means of ‘Sensicons’: multimodal messages...
conference paper 2014
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Tak, S. (author), Toet, A. (author), van Erp, J. (author)
We tested how non-experts judge point probability for seven different visual representations of uncertainty, using a case from an unfamiliar domain. Participants (n = 140) rated the probability that the boundary between two earth layers passed through a given point, for seven different visualizations of the positional uncertainty of the boundary...
article 2014
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Toet, A. (author), Tak, S. (author)
Previous research has shown that perceived facial valence is biased toward background valence. Here, we examine whether background dominance also affects perceived facial dominance. In particular, we hypothesized that downward-pointing triangles, which are known to convey threat, would affect perceived facial dominance. Participants judged...
article 2013
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de Jong, A.P.J. (author), Tak, S. (author), Toet, A. (author), Schultz, S. (author), Wijbenga, J.P. (author), van Erp, J.B.F. (author)
Several interaction techniques have been proposed to enable transfer of information between different displays in heterogeneous multi-display environments. However, it is not clear whether subjective user preference for these different techniques depends on the nature of the displays between which information is transferred. We explore...
conference paper 2013
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Toet, A. (author), Tak, S. (author)
We investigated if simulated social disorder affects perceived facial valence in a desktop virtual environment. Both in real and virtual imagery signs of disorder negatively bias perceived facial valence.
conference paper 2013
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Toet, A. (author), Henselmans, M. (author), Lucassen, M.P. (author), Gevers, T. (author)
This study explores the effects of various spatiotemporal dynamic texture characteristics on human emotions. The emotional experience of auditory (eg, music) and haptic repetitive patterns has been studied extensively. In contrast, the emotional experience of visual dynamic textures is still largely unknown, despite their natural ubiquity and...
article 2011
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Toet, A. (author), Smeets, M.A.M. (author), van Dijk, E. (author), Dijkstra, D. (author), van den Reijen, L. (author), TNO Defensie en Veiligheid (author)
Previous studies showed that orange odor reduces the anticipatory anxiety and improves the mood of patients waiting for scheduled appointments in small dental practices. We replicated these previous studies in the setting of three large dental clinics. In addition, we investigated whether another pleasant fruity smell (apple odor) is similarly...
article 2010
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Toet, A. (author), Hogervorst, M.A. (author), Nikolov, S.G. (author), Lewis, J.J. (author), Dixon, T.D. (author), Bull, D.R. (author), Canagarajah, C.N. (author), TNO Defensie en Veiligheid (author)
The increasing availability and deployment of imaging sensors operating in multiple spectral bands has led to a large research effort in image fusion, resulting in a plethora of pixel-level image fusion algorithms. However, the cognitive aspects of multisensor image fusion have not received much attention in the development of these methods. In...
article 2010
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Toet, A. (author), Kahrimanović, M. (author), Delleman, N.J. (author), TNO Defensie en Veiligheid (author)
Restrictions of field-of-view are known to impair human performance for a range of different tasks. However, such effects on human locomotion through a complex environment are still not clear. Effects of both horizontal (30°, 75°, 112°, 120°, 140°, 160°, and 180°) and vertical (18° and 48°) field-of-view restrictions on the walking speed and...
article 2008
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Toet, A. (author), de Vries, S.C. (author), van Emmerik, M.L. (author), Bos, J.E. (author), TNO Defensie en Veiligheid (author), DenV (author)
We used a desktop computer game environment to study the effect Field-of-View (FOV) on cybersickness. In particular, we examined the effect of differences between the internal FOV (iFOV, the FOV which the graphics generator is using to render its images) and the external FOV (eFOV, the FOV of the presented images as seen from the physical...
conference paper 2008
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Toet, A. (author), Hogervorst, M.A. (author), TNO Defensie en Veiligheid (author)
We developed a simple and fast lookup-table based method to derive and apply natural daylight colors to multi-band night-time images. The method deploys an optimal color transformation derived from a set of samples taken from a daytime color reference image. The colors in the resulting colorized multiband night-time images closely resemble the...
conference paper 2008
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Hogervorst, M.A. (author), Toet, A. (author)
We present a fast and efficient method to derive and apply natural colors to nighttime imagery from multiband sensors. The color mapping is derived from the combination of a multiband image and a corresponding natural color reference image. The mapping optimizes the match between the multiband image and the reference image, and yields a...
conference paper 2008
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Toet, A. (author), Jansen, S.E.M. (author), Delleman, N.J. (author), TNO Defensie en Veiligheid (author)
Effects of field-of-view restrictions on the speed and accuracy of participants performing a real-world manoeuvring task through an obstacled environment were investigated. Although field-of-view restrictions are known to affect human behaviour and to degrade performance for a range of different tasks, the relationship between human manoeuvring...
article 2007
Searched for: subject:"Perception"
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