Gregory K Essick

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Although sensory problems, including unusual tactile sensitivity, are heavily associated with autism, there is a dearth of rigorous psychophysical research. We compared tactile sensation in adults with autism to controls on the palm and forearm, the latter innervated by low-threshold unmyelinated afferents subserving a social/affiliative submodality of(More)
Autism spectrum disorders (ASD) are associated with differences in sensory sensitivity and affective response to sensory stimuli, the neural basis of which is still largely unknown. We used psychophysics and functional magnetic resonance imaging (fMRI) to investigate responses to somatosensory stimulation with three textured surfaces that spanned a range of(More)
UNLABELLED Individuals with temporomandibular disorder (TMD) suffer from persistent facial pain and exhibit abnormal sensitivity to tactile stimulation. To better understand the pathophysiological mechanisms underlying TMD, we investigated cortical correlates of this abnormal sensitivity to touch. Using functional magnetic resonance imaging (fMRI), we(More)
Food oral processing includes all muscle activities, jaw movements, and tongue movements that contribute to preparing food for swallowing. Simultaneously, during the transformation of food structure to a bolus, a cognitive representation of food texture is formed. These physiological signals detected during oral processing are highly complex and dynamic in(More)
The purpose of this study was to investigate cross-sectional and longitudinal associations between hearing acuity and tooth loss in 1156 US veterans taking part in the Veterans Affairs' Normative Aging (NAS) and Dental Longitudinal (DLS) Studies in the Boston, MA, area. The mean age was 48 years (SD = 8.9), 5.3% were edentulous, and 15.4% had < 17 teeth at(More)
The American Student Dental Association surveyed 69 dental deans representing schools in the United States, Canada, and Puerto Rico to assess the priority of research and the role of dental students in research activity. Student interest, curricular requirements, potential funding, and opportunities available, as related to dental research, were topics(More)
1 2 3 4 5 SENSATIONS EVOKED BY MICROSTIMULATION OF SINGLE 6 MECHANORECEPTIVE AFFERENTS INNERVATING THE HUMAN FACE AND 7 MOUTH 8 9 by 10 11 M. Trulssonand G.K. Essick 12 13 Department of Dental Medicine, Karolinska Institutet, S-141 04 Huddinge, Sweden 14 Department of Prosthodontics and Center for Neurosensory Disorders, University of North 15 Carolina at(More)
Patients with autism spectrum disorders (ASDs) may have difficulty tolerating conventional dental treatment due to aberrant sensory responsiveness. The purpose of this report was to describe the successful treatment of obstructive sleep apnea (OSA) in a nonverbal 20-year-old male patient with ASD using a dental appliance. A series of appointments prepared(More)
KATHERINE A. STEERE: Palatal Tactile Sensitivity in Adults with Repaired Cleft Lip and Palate (Under the direction of David Zajac) Individuals with repaired cleft lip and palate (CLP) may be at risk for decreased tactile sensitivity in the oral cavity due to surgical intervention and scarring. Three research questions were proposed: 1) Do adults with(More)
PURPOSE To evaluate differences in masticatory muscle function during chewing of model foods designed to differ in fracture strength between dentate subjects (n = 5, ages 59 to 68 years) versus patients treated with a maxillary conventional complete denture opposing natural dentition or one of the following types of mandibular complete dentures:(More)