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https://www.readbyqxmd.com/read/28421648/placebo-like-analgesia-via-response-imagery
#1
K J Peerdeman, A I M van Laarhoven, D J P Bartels, M L Peters, A W M Evers
BACKGROUND: Placebo effects on pain are reliably observed in the literature. A core mechanism of these effects is response expectancies. Response expectancies can be formed by instructions, prior experiences and observation of others. Whether mental imagery of a response can also induce placebo-like expectancy effects on pain has not yet been studied systematically. METHODS: In Study 1, 80 healthy participants were randomly allocated to (i) response imagery or (ii) control imagery...
April 19, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28399873/influence-of-functional-task-oriented-mental-practice-on-the-gait-of-transtibial-amputees-a-randomized-clinical-trial
#2
Rodrigo Gontijo Cunha, Paulo José Guimarães Da-Silva, Clarissa Cardoso Dos Santos Couto Paz, Ana Carolina da Silva Ferreira, Carlos Julio Tierra-Criollo
BACKGROUND: Mental practice (MP) through motor imagery is a cognitive training strategy used to improve locomotor skills during rehabilitation programs. Recent works have used MP tasks to investigate the neurophysiology of human gait; however, its effect on functional performance has not been evaluated. In the present study, the influence of gait-oriented MP tasks on the rehabilitation process of gait in transtibial amputees was investigated by assessing the vertical (V), anterior-posterior (AP), and medio-lateral (ML) ground reaction forces (GRFs) and the time duration of the support phase of the prosthetic limb...
April 11, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28399717/sensory-substitution-and-multimodal-mental-imagery
#3
Bence Nanay
Many philosophers use findings about sensory substitution devices in the grand debate about how we should individuate the senses. The big question is this: Is "vision" assisted by (tactile) sensory substitution really vision? Or is it tactile perception? Or some sui generis novel form of perception? My claim is that sensory substitution assisted "vision" is neither vision nor tactile perception, because it is not perception at all. It is mental imagery: visual mental imagery triggered by tactile sensory stimulation...
January 1, 2017: Perception
https://www.readbyqxmd.com/read/28396642/editorial-mental-imagery-in-clinical-disorders
#4
EDITORIAL
David G Pearson, Julie Krans
No abstract text is available yet for this article.
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28386699/dreamlike-effects-of-lsd-on-waking-imagery-in-humans-depend-on-serotonin-2a-receptor-activation
#5
Rainer Kraehenmann, Dan Pokorny, Leonie Vollenweider, Katrin H Preller, Thomas Pokorny, Erich Seifritz, Franz X Vollenweider
RATIONALE: Accumulating evidence indicates that the mixed serotonin and dopamine receptor agonist lysergic acid diethylamide (LSD) induces an altered state of consciousness that resembles dreaming. OBJECTIVES: This study aimed to test the hypotheses that LSD produces dreamlike waking imagery and that this imagery depends on 5-HT2A receptor activation and is related to subjective drug effects. METHODS: Twenty-five healthy subjects performed an audiorecorded guided mental imagery task 7 h after drug administration during three drug conditions: placebo, LSD (100 mcg orally) and LSD together with the 5-HT2A receptor antagonist ketanserin (40 mg orally)...
April 7, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28385624/weighted-spatial-based-geometric-scheme-as-an-efficient-algorithm-for-analyzing-single-trial-eegs-to-improve-cue-based-bci-classification
#6
Fatemeh Alimardani, Reza Boostani, Benjamin Blankertz
There is a growing interest in analyzing the geometrical behavior of electroencephalogram (EEG) covariance matrix in the context of brain computer interface (BCI). The bottleneck of the current Riemannian framework is the bias of the mean vector of EEG signals to the noisy trials, which deteriorates the covariance matrix in the manifold space. This study presents a spatial weighting scheme to reduce the effect of noisy trials on the mean vector. To assess the proposed method, dataset IIa from BCI competition IV, containing the EEG trials of 9 subjects performing four mental tasks, was utilized...
March 22, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28381448/central-command-increases-muscular-oxygenation-of-the-non-exercising-arm-at-the-early-period-of-voluntary-one-armed-cranking
#7
Kei Ishii, Kanji Matsukawa, Ryota Asahara, Nan Liang, Kana Endo, Mitsuhiro Idesako, Kensuke Michioka, Yu Sasaki, Hironobu Hamada, Kaori Yamashita, Tae Watanabe, Tsuyoshi Kataoka, Makoto Takahashi
This study aimed to examine whether central command increases oxygenation in non-contracting arm muscles during contralateral one-armed cranking and whether the oxygenation response caused by central command differs among skeletal muscles of the non-exercising upper limb. In 13 male subjects, the relative changes in oxygenated-hemoglobin concentration (Oxy-Hb) of the non-contracting arm muscles [the anterior deltoid, triceps brachii, biceps brachii, and extensor carpi radialis (ECR)] were measured during voluntary one-armed cranking (intensity, 35-40% of maximal voluntary effort) and mental imagery of the one-armed exercise for 1 min...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28377159/reorganization-of-the-thalamocortical-network-in-musicians
#8
Shoji Tanaka, Eiji Kirino
The cortico-thalamocortical network is relevant to music performance in that the network can regulate sensitivity to afferent input or sound, mediate the integration of multimodal information required for the performance, and play a role in skilled performance control. We, therefore, predicted that this network would be reorganized via musical training-induced neuroplasticity. To test this hypothesis, we analyzed resting-state functional connectivity of the thalamocortical network in musicians (n = 35) and nonmusicians (n = 35)...
April 1, 2017: Brain Research
https://www.readbyqxmd.com/read/28375179/perspectives-on-technology-assisted-relaxation-approaches-to-support-mind-body-skills-practice-in-children-and-teens-clinical-experience-and-commentary
#9
Timothy Culbert
It has been well-established that a variety of mind-body (MB) techniques, including yoga, mental imagery, hypnosis, biofeedback, and meditation, are effective at addressing symptoms such as pain, anxiety, nausea, and insomnia, as well as helping with a wide variety of medical, emotional, and behavioral issues in pediatric populations. In addition, MB skills can also be health promoting in the long-term, and with regular practice, could potentially contribute to longer attention spans, social skills, emotional regulation, and enhanced immune system functioning...
April 4, 2017: Children
https://www.readbyqxmd.com/read/28365362/the-precuneus-and-hippocampus-contribute-to-individual-differences-in-the-unfolding-of-spatial-representations-during-episodic-autobiographical-memory
#10
Melissa Hebscher, Brian Levine, Asaf Gilboa
Spatial information is a central aspect of episodic autobiographical memory (EAM). Space-based theories of memory, including cognitive map and scene construction models, posit that spatial reinstatement is a required process during early event recall. Spatial information can be represented from both allocentric (third-person) and egocentric (first-person) perspectives during EAM, with egocentric perspectives being important for mental imagery and supported by the precuneus. Individuals differ in their tendency to rely on allocentric or egocentric information, and in general, the subjective experience of remembering in EAM differs greatly across individuals...
March 29, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28363837/when-math-operations-have-visuospatial-meanings-versus-purely-symbolic-definitions-which-solving-stages-and-brain-regions-are-affected
#11
Aryn A Pyke, Jon M Fincham, John R Anderson
How does processing differ during purely symbolic problem solving versus when mathematical operations can be mentally associated with meaningful (here, visuospatial) referents? Learners were trained on novel math operations (↓, ↑), that were defined strictly symbolically or in terms of a visuospatial interpretation (operands mapped to dimensions of shaded areas, answer = total area). During testing (scanner session), no visuospatial representations were displayed. However, we expected visuospatially-trained learners to form mental visuospatial representations for problems, and exhibit distinct activations...
March 28, 2017: NeuroImage
https://www.readbyqxmd.com/read/28334149/higher-striatal-iron-concentration-is-linked-to-frontostriatal-underactivation-and-poorer-memory-in-normal-aging
#12
Grégoria Kalpouzos, Benjamín Garzón, Rouslan Sitnikov, Carmel Heiland, Alireza Salami, Jonas Persson, Lars Bäckman
In the brain, intracellular iron is essential for cellular metabolism. However, an overload of free iron is toxic, inducing oxidative stress and cell death. Although an increase of striatal iron has been related to atrophy and impaired cognitive performance, the link between elevated iron and altered brain activity in aging remains unexplored. In a sample of 37 younger and older adults, we examined whether higher striatal iron concentration could underlie age-related differences in frontostriatal activity induced by mental imagery of motor and non-motor scenes, and poorer recall of the scenes...
February 23, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28332861/treatment-of-nightmares-in-psychiatric-inpatients-with-imagery-rehearsal-therapy-an-open-trial-and-case-series
#13
Thomas E Ellis, Katrina A Rufino, Michael R Nadorff
OBJECTIVES: This study sought to assess the utility of Imagery Rehearsal Therapy (IRT) for nightmares in an inpatient psychiatric setting. Although IRT enjoys a substantial evidence base for efficacy in various populations, data with psychiatric inpatients are lacking. PARTICIPANTS: Participants were 20 adult psychiatric inpatients (11 male, 9 female; mean age=43.4), in an extended stay psychiatric inpatient facility. All participants were diagnosed with multiple, treatment resistant, comorbid conditions, including mood disorders, anxiety disorders, personality disorders, and substance-related disorders...
March 23, 2017: Behavioral Sleep Medicine
https://www.readbyqxmd.com/read/28328506/a-stimulus-independent-hybrid-bci-based-on-motor-imagery-and-somatosensory-attentional-orientation
#14
Lin Yao, Xinjun Sheng, Dingguo Zhang, Ning Jiang, Natalie Mrachacz-Kersting, Xiangyang Zhu, Dario Farina
Distinctive EEG signals from the motor and somatosensory cortex are generated during mental tasks of motor imagery (MI) and somatosensory attentional orientation (SAO). In this study, we hypothesize that a combination of these two signal modalities provides improvements in BCI performance with respect to using the two methods separately, and generate novel types of multi-class BCI systems. Thirty-two subjects were randomly divided into a Control-Group and a Hybrid-Group. In the Control-Group, the subjects performed left and right hand motor imagery (i...
March 17, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28323166/neural-foundations-of-overt-and-covert-actions
#15
Panagiotis G Simos, Eleftherios Kavroulakis, Thomas Maris, Efrosini Papadaki, Themistoklis Boursianis, Giorgos Kalaitzakis, Helen E Savaki
We used fMRI to assess the human brain areas activated for execution, observation and 1st person motor imagery of a visually guided tracing task with the index finger. Voxel-level conjunction analysis revealed several cortical areas activated in common across all three motor conditions, namely, the upper limb representation of the primary motor and somatosensory cortices, the dorsal and ventral premotor, the superior and inferior parietal cortices as well as the posterior part of the superior and middle temporal gyrus including the temporo-parietal junction (TPj) and the extrastriate body area (EBA)...
March 18, 2017: NeuroImage
https://www.readbyqxmd.com/read/28321195/pre-cueing-effects-attention-or-mental-imagery
#16
Peter Fazekas, Bence Nanay
No abstract text is available yet for this article.
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28321186/brain-activity-during-mental-imagery-of-gait-versus-gait-like-plantar-stimulation-a-novel-combined-functional-mri-paradigm-to-better-understand-cerebral-gait-control
#17
Matthieu Labriffe, Cédric Annweiler, Liubov E Amirova, Guillemette Gauquelin-Koch, Aram Ter Minassian, Louis-Marie Leiber, Olivier Beauchet, Marc-Antoine Custaud, Mickaël Dinomais
Human locomotion is a complex sensorimotor behavior whose central control remains difficult to explore using neuroimaging method due to technical constraints, notably the impossibility to walk with a scanner on the head and/or to walk for real inside current scanners. The aim of this functional Magnetic Resonance Imaging (fMRI) study was to analyze interactions between two paradigms to investigate the brain gait control network: (1) mental imagery of gait, and (2) passive mechanical stimulation of the plantar surface of the foot with the Korvit boots...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28303093/understanding-and-self-organization
#18
Natika W Newton
How do we manage to understand a completely novel state of affairs, such as the sudden effects of an unexpected earthquake, or the arrival of a total stranger instead of the sister we were waiting for? In each case, for a moment we might be stunned, but we are able quite quickly to fit these events into our overall framework for understanding the world. However, terrified and despairing we feel, we know what earthquakes are and this event fits that schema; in the case of the stranger we know that this kind of thing happens, and that we must ask the stranger "Who are you, and where is my sister?" This paper asks about the mechanisms by which we rapidly achieve an understanding of our world, both the unexpected changes we may experience, and the ongoing comfortable familiarity we normally have with our surroundings...
2017: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/28296965/mental-imagery-boosts-music-compositional-creativity
#19
Sarah Shi Hui Wong, Stephen Wee Hun Lim
We empirically investigated the effect of mental imagery on young children's music compositional creativity. Children aged 5 to 8 years participated in two music composition sessions. In the control session, participants based their composition on a motif that they had created using a sequence of letter names. In the mental imagery session, participants were given a picture of an animal and instructed to imagine the animal's sounds and movements, before incorporating what they had imagined into their composition...
2017: PloS One
https://www.readbyqxmd.com/read/28287787/training-working-memory-in-older-adults-is-there-an-advantage-of-using-strategies
#20
Erika Borella, Barbara Carretti, Roberta Sciore, Emanuela Capotosto, Laurence Taconnat, Cesare Cornoldi, Rossana De Beni
The purpose of the present study was to test the efficacy of a working memory (WM) training in elderly people, and to compare the effects of a WM training based on an adaptive procedure with one combining the same procedure with the use of a strategy, based on the construction of visual mental images. Eighteen older adults received training with a WM task (the WM group), another 18 received the same WM training and were also taught to use a visual imagery strategy (the WM + Strategy group), and another 18 served as active controls...
March 2017: Psychology and Aging
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