@article{fiset_inducing_2006,

title = {Inducing letter-by-letter dyslexia in normal readers},

author = {D. Fiset and F. Gosselin and C. Blais and M. Arguin},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-33749435964&doi=10.1162%2fjocn.2006.18.9.1466&partnerID=40&md5=edc961f6e18a7de0811cbc0e7ce9be1d},

doi = {10.1162/jocn.2006.18.9.1466},

issn = {0898929X},

year  = {2006},

date = {2006-01-01},

journal = {Journal of Cognitive Neuroscience},

volume = {18},

number = {9},

pages = {1466–1476},

abstract = {Letter-by-letter (LBL) dyslexia is an acquired reading disorder characterized by very slow reading and a large linear word length effect. This suggests the use of a sequential LBL strategy, in sharp contrast with the parallel letter processing used by normal subjects. Recently, we have proposed that the reading difficulty of LBL dyslexics is due to a deficit in discriminating visually similar letters based on parallel letter processing [Arguin, M., Fiset, S., & Bub, D. Sequential and parallel letter processing in letter-by-letter dyslexia. Cognitive Neuropsychology, 19, 535-555, 2002]. The visual mechanisms underlying this deficit and the LBL strategy, however, are still unknown. In this article, we propose that LBL dyslexic patients have lost the ability to use, for parallel letter processing, the optimal spatial frequency band for letter and word recognition. We claim that, instead, they rely on lower spatial frequencies for parallel processing, that these lower spatial frequencies produce confusions between visually similar letters, and that the LBL compensatory strategy allows them to extract higher spatial frequencies. The LBL strategy would thus increase the spatial resolution of the visual system, effectively resolving the issue pertaining to between-letter similarity. In Experiments 1 and 2, we succeeded in replicating the main features characterizing LBL dyslexia by having normal individuals read low-contrast, high-pass-filtered words. Experiment 3, conducted in LBL dyslexic L.H., shows that, indeed, the letter confusability effect is based on low spatial frequencies, whereas this effect was not supported by high spatial frequencies. © 2006 Massachusetts Institute of Technology.},

keywords = {Acquired, adult, analysis of variance, article, Brain Damage, Chronic, clinical feature, confusion, Contrast Sensitivity, controlled study, Dyslexia, Functional Laterality, human, human experiment, Humans, Infarction, male, Mental Processes, parallel design, Pattern Recognition, Photic Stimulation, Posterior Cerebral Artery, priority journal, reaction time, Reading, Reference Values, spatial frequency discrimination, Visual, visual discrimination, Visual Perception, visual system, word recognition},

pubstate = {published},

tppubtype = {article}

}

@article{cote_documenting_2005,

title = {Documenting the efficacy of virtual realityexposure with psychophysiological and information processing measures},

author = {S. Côté and S. Bouchard},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-25144467954&doi=10.1007%2fs10484-005-6379-x&partnerID=40&md5=12308d48c2d79eff9c6446385244c27c},

doi = {10.1007/s10484-005-6379-x},

issn = {10900586 (ISSN)},

year  = {2005},

date = {2005-01-01},

journal = {Applied Psychophysiology Biofeedback},

volume = {30},

number = {3},

pages = {217–232},

abstract = {Many outcome studies have been conducted to assess the efficacy of virtual reality in the treatment of specific phobias. However, most studies used self-report data. The addition of objective measures of arousal and information processing mechanisms would be a valuable contribution in order to validate the usefulness of virtual reality in the treatment of anxiety disorders. The goal of this study was to document the impact of virtual reality exposure (VRE) on cardiac response and automatic processing of threatening stimuli. Twenty-eight adults suffering from arachnophobia were assessed and received an exposure-based treatment using virtual reality. General outcome and specific processes measures included a battery of standardized questionnaires, a pictorial emotional Stroop task, a behavioral avoidance test and a measure of participants' inter-beat intervals (IBI) while they were looking at a live tarantula. Assessment was conducted before and after treatment. Repeated measures ANOVAs revealed that therapy had a positive impact on questionnaire data, as well as on the behavioral avoidance test. Analyses made on the pictorial Stroop task showed that information processing of spider-related stimuli changed after treatment, which also indicates therapeutic success. Psychophysiological data also showed a positive change after treatment, suggesting a decrease in anxiety. In sum, VRE led to significant therapeutic improvements on objective measures as well as on self-report instruments. © 2005 Springer Science+Business Media, Inc.},

keywords = {adult, analysis of variance, Animals, arachnophobia, Arousal, article, avoidance behavior, cardiovascular response, clinical article, emotion, Emotions, exposure, Fear, female, Heart Rate, human, Humans, information processing, male, medical documentation, Mental Processes, Middle Aged, outcomes research, phobia, phobias, Phobic Disorders, Psychophysiology, questionnaire, Reproducibility of Results, self report, spider, Spiders, standardization, stimulus response, task performance, threat, treatment outcome, User-Computer Interface, virtual reality, Visual Perception, visual stimulation},

pubstate = {published},

tppubtype = {article}

}