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https://www.readbyqxmd.com/read/28088483/physiology-recording-with-magnetic-field-probes-for-fmri-denoising
#1
Simon Gross, Laetitia Vionnet, Lars Kasper, Benjamin E Dietrich, Klaas P Pruessmann
Physiological noise originating in cardiovascular and respiratory processes is a substantial confound in BOLD fMRI. When unaccounted for it reduces the temporal SNR and causes error in inferred brain activity and connectivity. Physiology correction typically relies on auxiliary measurements with peripheral devices such as ECG, pulse oximeters, and breathing belts. These require direct skin contact or at least a tight fit, impairing subject comfort and adding to the setup time. In this work, we explore a touch-free alternative for physiology recording, using magnetic detection with NMR field probes...
January 11, 2017: NeuroImage
https://www.readbyqxmd.com/read/28087410/repair-of-8-oxog-a-mismatches-by-the-mutyh-glycosylase-mechanism-metals-medicine
#2
REVIEW
Douglas M Banda, Nicole N Nuñez, Michael A Burnside, Katie M Bradshaw, Sheila S David
Reactive oxygen and nitrogen species (RONS) may infringe on the passing of pristine genetic information by inducing DNA inter- and intra-strand crosslinks, protein-DNA crosslinks, and chemical alterations to the sugar or base moieties of DNA. 8-Oxo-7,8-dihydroguanine (8-oxoG) is one of the most prevalent DNA lesions formed by RONS and is repaired through the base excision repair (BER) pathway involving the DNA repair glycosylases OGG1 and MUTYH in eukaryotes. MUTYH removes adenine (A) from 8-oxoG:A mispairs, thus mitigating the potential of G:C to T:A transversion mutations from occurring in the genome...
January 10, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28080971/interoceptive-dimensions-across-cardiac-and-respiratory-axes
#3
Sarah N Garfinkel, Miranda F Manassei, Giles Hamilton-Fletcher, Yvo In den Bosch, Hugo D Critchley, Miriam Engels
Interoception refers to the sensing of signals concerning the internal state of the body. Individual differences in interoceptive sensitivity are proposed to account for differences in affective processing, including the expression of anxiety. The majority of investigations of interoceptive accuracy focus on cardiac signals, typically using heartbeat detection tests and self-report measures. Consequently, little is known about how different organ-specific axes of interoception relate to each other or to symptoms of anxiety...
November 19, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28080967/affective-touch-and-attachment-style-modulate-pain-a-laser-evoked-potentials-study
#4
Charlotte Krahé, Marianne M Drabek, Yannis Paloyelis, Aikaterini Fotopoulou
Affective touch and cutaneous pain are two sub-modalities of interoception with contrasting affective qualities (pleasantness/unpleasantness) and social meanings (care/harm), yet their direct relationship has not been investigated. In 50 women, taking into account individual attachment styles, we assessed the role of affective touch and particularly the contribution of the C tactile (CT) system in subjective and electrophysiological responses to noxious skin stimulation, namely N1 and N2-P2 laser-evoked potentials...
November 19, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28080961/interoception-beyond-homeostasis-affect-cognition-and-mental-health
#5
Manos Tsakiris, Hugo Critchley
Interoception refers to the sensing of the internal state of one's body. Interoception is distinct from the processing of sensory information concerning external (non-self) stimuli (e.g. vision, hearing, touch and smell) and is the afferent axis to internal (autonomic and hormonal) physiological control. However, the impact of interoception extends beyond homeostatic/allostatic reflexes: it is proposed to be fundamental to motivation, emotion (affective feelings and behaviours), social cognition and self-awareness...
November 19, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28080111/generalized-movement-representation-in-haptic-perception
#6
Lucile Dupin, Vincent Hayward, Mark Wexler
The extraction of spatial information by touch often involves exploratory movements, with tactile and kinesthetic signals combined to construct a spatial haptic percept. However, the body has many tactile sensory surfaces that can move independently, giving rise to the source binding problem: when there are multiple tactile signals originating from sensory surfaces with multiple movements, are the tactile and kinesthetic signals bound to one another? We studied haptic signal combination by applying the tactile signal to a stationary fingertip while another body part (the other hand or a foot) or a visual target moves, and using a task that can only be done if the tactile and kinesthetic signals are combined...
January 12, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28079157/feeling-touched-emotional-modulation-of-somatosensory-potentials-to-interpersonal-touch
#7
N Ravaja, V Harjunen, I Ahmed, G Jacucci, M M Spapé
Although the previous studies have shown that an emotional context may alter touch processing, it is not clear how visual contextual information modulates the sensory signals, and at what levels does this modulation take place. Therefore, we investigated how a toucher's emotional expressions (anger, happiness, fear, and sadness) modulate touchee's somatosensory-evoked potentials (SEPs) in different temporal ranges. Participants were presented with tactile stimulation appearing to originate from expressive characters in virtual reality...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28079073/fluid-dynamics-water-flows-out-of-touch
#8
Björn Hof
No abstract text is available yet for this article.
January 11, 2017: Nature
https://www.readbyqxmd.com/read/28078359/in-touch-with-mental-rotation-interactions-between-mental-and-tactile-rotations-and-motor-responses
#9
Johannes Lohmann, Bettina Rolke, Martin V Butz
Although several process models have described the cognitive processing stages that are involved in mentally rotating objects, the exact nature of the rotation process itself remains elusive. According to embodied cognition, cognitive functions are deeply grounded in the sensorimotor system. We thus hypothesized that modal rotation perceptions should influence mental rotations. We conducted two studies in which participants had to judge if a rotated letter was visually presented canonically or mirrored. Concurrently, participants had to judge if a tactile rotation on their palm changed direction during the trial...
January 11, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28077668/auditory-adaptation-improves-tactile-frequency-perception
#10
Lexi E Crommett, Alexis Pérez-Bellido, Jeffrey M Yau
Our ability to process temporal frequency information by touch underlies our capacity to perceive and discriminate surface textures. Auditory signals, which also provide extensive temporal frequency information, can systematically alter the perception of vibrations on the hand. How auditory signals shape tactile processing is unclear: perceptual interactions between contemporaneous sounds and vibrations are consistent with multiple neural mechanisms. Here we used a crossmodal adaptation paradigm, which separated auditory and tactile stimulation in time, to test the hypothesis that tactile frequency perception depends on neural circuits that also process auditory frequency...
January 11, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28076964/trigeminal-neuralgia-diagnosis-and-treatment
#11
Stine Maarbjerg, Giulia Di Stefano, Lars Bendtsen, Giorgio Cruccu
Introduction Trigeminal neuralgia (TN) is characterized by touch-evoked unilateral brief shock-like paroxysmal pain in one or more divisions of the trigeminal nerve. In addition to the paroxysmal pain, some patients also have continuous pain. TN is divided into classical TN (CTN) and secondary TN (STN). Etiology and pathophysiology Demyelination of primary sensory trigeminal afferents in the root entry zone is the predominant pathophysiological mechanism. Most likely, demyelination paves the way for generation of ectopic impulses and ephaptic crosstalk...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28076625/endoscopic-or-no-touch-vein-harvesting-for-cabg-what-is-best-for-the-patient
#12
Tomislav Kopjar, Stjepan Ivankovic, Melchior Luiz Lima, Bruno Botelho Pinheiro, Michael Richard Dashwood
No abstract text is available yet for this article.
November 2016: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28075294/nursing-is-stronger-when-we-work-together
#13
Howard Catton
There are some striking similarities between Brexit and the election of Donald Trump as president of the United States: anger with an out-of-touch establishment, a desire to take back control and many people feeling left behind by globalisation.
January 11, 2017: Nursing Standard
https://www.readbyqxmd.com/read/28073044/influence-of-the-body-schema-on-mirror-touch-synesthesia
#14
Jared Medina, Carrie DePasquale
Individuals with mirror-touch synesthesia (MTS) report feeling touch on their own body when seeing someone else being touched. We examined how the body schema - an on-line representation of body position in space - is involved in mapping touch from a viewed body to one's own body. We showed 45 mirror-touch synesthetes videos of a hand being touched, varying the location of the viewed touch by hand (left, right), skin surface (palmar, dorsal) and finger (index, ring). Participant hand posture was either congruent or incongruent with the posture of the viewed hand...
December 24, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28071977/effect-of-touch-screen-tablet-use-on-fine-motor-development-of-young-children
#15
Ling-Yi Lin, Rong-Ju Cherng, Yung-Jung Chen
AIM: To investigate the effects of touch-screen tablet use on the fine motor development of preschool children without developmental delay. METHODS: 40 children who used a touch-screen tablet more 60 minutes per week for at least 1 month received a 24-week home fine motor activity program using a touch-screen-tablet. 40 children matched for age (mean = 61.0 months) and sex who did not meet the criteria for previous tablet use received a 24-week program consisting of manual play activities...
January 10, 2017: Physical & Occupational Therapy in Pediatrics
https://www.readbyqxmd.com/read/28071605/carbon-nanotube-on-eraser-based-eco-friendly-fabrication-of-skin-like-large-area-matrix-of-flexible-strain-and-pressure-sensor
#16
Parikshit Sahatiya, Sushmee Badhulika
This paper reports a new type of electronic, recoverable skin-like pressure and strain sensor on flexible, bio-degradable pencil eraser substrate and has been fabricated by a solvent-free, low-cost and energy efficient process. Multi-walled carbon nanotube (MWCNTs) film as strain sensing element was patterned on pencil eraser by rolling pin and pre-compaction mechanical press which induces high interfacial bonding between the MWCNTs and eraser substrate which enables the sensor to achieve recoverability under ambient conditions...
January 10, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28070622/haptic-feedback-attenuates-illusory-bias-in-pantomime-grasping-evidence-for-a-visuo-haptic-calibration
#17
Jillian Chan, Matthew Heath
Relative visual information has been shown to mediate grasping responses directed to an area previously occupied by a target object (i.e., pantomime-grasping) and is an information type functionally distinct from the absolute visual information supporting naturalistic grasping (i.e., grasping a physical target). Pantomime- and naturalistic grasps differ not only in terms of their visual properties, but also because the former lacks physical interaction with a target object (i.e., no-haptic feedback). The absence of haptic feedback may represent a reason why pantomime- and naturalistic grasps differ...
January 9, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28069503/wettability-gradient-on-the-elytra-in-the-aquatic-beetle-cybister-chinensis-and-its-role-in-angular-position-of-the-beetle-at-water-air-interface
#18
Mingxia Sun, Yuan Chen, Yongmei Zheng, Mingming Zhen, Chunying Shu, Zhendong Dai, Aiping Liang, Stanislav N Gorb
: The surface of the elytra in some species of aquatic beetles displays relatively low contact angles (CAs), even showing hydrophilic properties. In this study, we report on an observation that both sexes of Cybister chinensis beetle fresh elytral surface do not exhibit uniform CA, but rather a wettability gradient along the longitudinal axis in posterior direction. The wettability is very different between females and males due to the presence (female) or absence (male) of channels on the elytral surface...
January 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28068514/interpersonal-interactions-for-haptic-guidance-during-maximum-forward-reaching
#19
S M Steinl, L Johannsen
Caregiver-patient interactions rely on interpersonal coordination (IPC) involving the haptic and visual modalities. We investigated in healthy individuals spontaneous IPC during joint maximum forward reaching. A 'contact-provider' (CP; n=2) kept light interpersonal touch (IPT) laterally with the wrist of the extended arm of a forward reaching, blind-folded 'contact-receiver' (CR; n=22). Due to the stance configuration, CP was intrinsically more stable. CR received haptic feedback during forward reaching in two ways: (1) presence of a light object (OBT) at the fingertips, (2) provision of IPT...
December 30, 2016: Gait & Posture
https://www.readbyqxmd.com/read/28067992/human-finger-electronics-based-on-opposing-humidity-resistance-responses-in-carbon-nanofilms
#20
Yanlong Tai, Gilles Lubineau
Carbon nanomaterials have excellent humidity sensing properties. Here, it is demonstrated that multiwalled carbon-nanotube (MWCNT)- and reduced-graphene-oxide (rGO)-based conductive films have opposite humidity/electrical resistance responses: MWCNTs increase their electrical resistance (positive response) and rGOs decrease their electrical resistance (negative response). The authors propose a new phenomenology that describes a "net"-like model for MWCNT films and a "scale"-like model for rGO films to explain these behaviors based on contributions from junction resistances (at interparticle junctions) and intrinsic resistances (of the particles)...
January 9, 2017: Small
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