PURPOSE Endoscopic technology has been developed to facilitate imagery for use during diagnostic and therapeutic phases of periodontal care. The purpose of this study was to compare the level of subgingival calculus detection using a periodontal endoscope with that of conventional tactile explorer in periodontitis subjects. METHODS A convenience sample of 26 subjects with moderate periodontit...

Tactile inspection is a task for detecting minute irregularities of several tens of micrometers and is one of the tasks performed by human senses. However, the detection of defects in tactile inspection has not been evaluated quantitatively. Therefore, this study aims to examine the factors that affect the detection of defects in tactile inspection by focusing on the haptic perception with acti...

As it is adaptive to accurately detect and localize bodily threats, it has been proposed that the brain prioritizes somatosensory input at body locations where pain is expected. To test this proposition, the detection of tactile changes on a body location was investigated to assess whether detection was facilitated by threat of pain. Healthy participants (N = 47) indicated whether two consecuti...

The Somatic Signal Detection Task (SSDT) is a recent paradigm serving to examine perceptual processes likely relevant for somatoform disorders. We tested whether touch illusions are more easily induced in individuals suffering from somatoform disorders (SFD) and whether their perceptual threshold for tactile stimuli is lower compared to healthy controls. Thirty-three participants with SFD and 3...

Attention-deficit hyperactivity disorder (ADHD) is characterized by an inability to concentrate, heightened activity, and hypermotoric behavior, but sensory (e.g., tactile) problems are common. The literature on tactile impairments in ADHD is limited, with most work employing clinical observations or questionnaires. We studied tactile processing in children with ADHD and hypothesized that child...

and sighted participants and its implications for tactile map creation. ABSTRACT Objective: To determine the optimal elevation of tactile map symbols. Background: Tactile perception research predicts that symbol elevation (vertical height) and texture on tactile maps could influence their readability. However, while research has shown that elevation influences detection and discrimination thres...

The purpose of this study was to determine the extent to which motor commands and peripheral reafference differentially control the detection of near-threshold, tactile stimuli. Detection of weak electrical stimuli applied to the index finger (D2) was evaluated with two bias-free measures of sensory detection, the index of detectability (d') and the proportion of stimuli detected. Stimuli were ...

The last few years have witnessed a rapid growth of research investigating how information is integrated across sensory modalities, a process at the core of our everyday perceptual experiences. The present study focuses on the integration of vision and touch and, in particular, how tactile perception is affected by a view of the relevant body part containing no information about the tactile sti...