Oscillatory Responses to Tactile Stimuli of Different Intensity. 2023

Alexander Kuc, and Ivan Skorokhodov, and Alexey Semirechenko, and Guzal Khayrullina, and Vladimir Maksimenko, and Anton Varlamov, and Susanna Gordleeva, and Alexander Hramov
Tactile Communication Research Laboratory, Pushkin State Russian Language Institute, 117485 Moscow, Russia.

Tactile perception encompasses several submodalities that are realized with distinct sensory subsystems. The processing of those submodalities and their interactions remains understudied. We developed a paradigm consisting of three types of touch tuned in terms of their force and velocity for different submodalities: discriminative touch (haptics), affective touch (C-tactile touch), and knismesis (alerting tickle). Touch was delivered with a high-precision robotic rotary touch stimulation device. A total of 39 healthy individuals participated in the study. EEG cluster analysis revealed a decrease in alpha and beta range (mu-rhythm) as well as theta and delta increase most pronounced to the most salient and fastest type of stimulation. The participants confirmed that slower stimuli targeted to affective touch low-threshold receptors were the most pleasant ones, and less intense stimuli aimed at knismesis were indeed the most ticklish ones, but those sensations did not form an EEG cluster, probably implying their processing involves deeper brain structures that are less accessible with EEG.

UI MeSH Term Description Entries
D010812 Physical Stimulation Act of eliciting a response from a person or organism through physical contact. Stimulation, Physical,Physical Stimulations,Stimulations, Physical
D001921 Brain The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM. Encephalon
D004644 Emotions Those affective states which can be experienced and have arousing and motivational properties. Feelings,Regret,Emotion,Feeling,Regrets
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012371 Robotics The application of electronic, computerized control systems to mechanical devices designed to perform human functions. Formerly restricted to industry, but nowadays applied to artificial organs controlled by bionic (bioelectronic) devices, like automated insulin pumps and other prostheses. Companion Robots,Humanoid Robots,Remote Operations (Robotics),Social Robots,Socially Assistive Robots,Telerobotics,Soft Robotics,Assistive Robot, Socially,Companion Robot,Humanoid Robot,Operation, Remote (Robotics),Operations, Remote (Robotics),Remote Operation (Robotics),Robot, Companion,Robot, Humanoid,Robot, Social,Robot, Socially Assistive,Robotic, Soft,Social Robot,Socially Assistive Robot,Soft Robotic
D014110 Touch Sensation of making physical contact with objects, animate or inanimate. Tactile stimuli are detected by MECHANORECEPTORS in the skin and mucous membranes. Tactile Sense,Sense of Touch,Taction,Sense, Tactile,Senses, Tactile,Tactile Senses,Tactions,Touch Sense,Touch Senses
D055698 Touch Perception The process by which the nature and meaning of tactile stimuli are recognized and interpreted by the brain, such as realizing the characteristics or name of an object being touched. Tactile Perception,Perception, Tactile,Perception, Touch,Perceptions, Tactile,Perceptions, Touch,Tactile Perceptions,Touch Perceptions

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