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Kalckert Andreas - - 2012
During voluntary hand movement, we sense that we generate the movement and that the hand is a part of our body. These feelings of control over bodily actions, or the sense of agency, and the ownership of body parts are two fundamental aspects of the way we consciously experience our ...
Su Zhe - - 2012
Humans have been shown to be good at using active touch to perceive subtle differences in compliance. They tend to use highly stereotypical exploratory strategies, such as applying normal force to a surface. We developed similar exploratory and perceptual algorithms for a mechatronic robotic system (Barrett arm/hand system) equipped with ...
Kilteni Konstantina K EVENT Lab, Facultat de Psicologia, Universitat de Barcelona, Barcelona, - - 2012
Recent studies have shown that a fake body part can be incorporated into human body representation through synchronous multisensory stimulation on the fake and corresponding real body part - the most famous example being the Rubber Hand Illusion. However, the extent to which gross asymmetries in the fake body can ...
Zaina Fabio F Italian Scientific Spine Institute, Milan, Italy. - - 2012
X-rays are the gold standard evaluation for sagittal plane deformities even if, to see the spine, it's necessary to move the arms from the resting position to a forward one. The postural impact of arm positions has never been verified. The aim of this study is to measure the effect ...
Selby Christopher P CP Department of Biochemistry and Biophysics, University of North Carolina School of Medicine, Chapel Hill, North Carolina 27599-7260, United - - 2012
The photolyase/cryptochrome family of proteins are FAD-containing flavoproteins which carry out blue-light-dependent functions including DNA repair, plant growth and development, and regulation of the circadian clock. In addition to FAD, many members of the family contain a second chromophore which functions as a photo-antenna, harvesting light and transferring the excitation ...
Brétigny P - - 2011
The aim of this study was to determine coordination profiles for the field hockey drive. Nine elite female players performed five drives each. They were asked to primarily maximize ball placement accuracy, and secondly to drive with high velocity. An optical motion capture system recorded the displacement of six markers ...
Reid Machar - - 2011
The serve, as the most important stroke in tennis, has attracted considerable biomechanical interest. Of its component parts, the swing has received disproportionate research attention and consequently, little is known regarding toss kinematics. Indeed, the age-old question of whether players serve to different parts of the court from the same ...
Fowler-Finn Kasey D - - 2012
An individual's prior experience of sexual signals can result in variation in mate preferences, with important consequences for the course of sexual selection. We test two hypotheses about the evolution of experience-mediated plasticity in mate preferences: mating assurance and mismating avoidance. We exposed female Enchenopa binotata treehoppers (Hemiptera: Membracidae) to ...
Kiyokawa Hiromichi - - 2011
Sound presented to the contralateral ear suppresses the amplitude of the 40-Hz auditory steady-state response (ASSR). The frequency characteristics of this suppression of the 40-Hz ASSR for amplitude modulated (AM) tones at 1,000 Hz (79-dB SPL) were examined in 12 healthy volunteers (10 males and 2 females, mean age 32.3 years) using ...
Ogah Imhokhai - - 2012
We investigated via a survey the relationship between hand clasping, arm folding, and handedness. We aimed to provide new data on degree of preference for each of these lateralities. We also examined the relative importance of thumb position versus interdigitisation of the fingers in determining one's comfort in a hand-clasping ...
Sammons Matthew R - - 2011
Fission yeast myosin-I (Myo1p) not only associates with calmodulin, but also employs a second light chain called Cam2p. cam2Δ cells exhibit defects in cell polarity and growth consistent with a loss of Myo1p function. Loss of Cam2p leads to a reduction in Myo1p levels at endocytic patches and a 50% ...
Burton T M W - - 2011
This paper reports the integration of a kinematic model of the human hand during cylindrical grasping, with specific focus on the accurate mapping of thumb movement during grasping motions, and a novel, multi-degree-of-freedom assistive exoskeleton mechanism based on this model. The model includes thumb maximum hyper-extension for grasping large objects ...
Kiguchi K - - 2011
A tremor is somewhat rhythmic motion that may occur in various body parts. An essential tremor is one of the most common tremor disorders of the arm and it may occur during a voluntary motion. If the essential tremor occurs in the arm, the person may not be able to ...
Piovesan D - - 2011
Impaired arm movements in stroke appear as a set of stereotypical kinematic patterns, characterized by abnormal joint coupling, which have a direct consequence on arm mechanics and can be quantified by the net arm stiffness at the hand. The current available measures of arm stiffness during functional tasks have limited ...
D'Alonzo M - - 2011
This paper presents a vibrotactile sensory substitution system that could be used to deliver sensory feedback to transradial amputees wearing a myoelectric hand prosthesis. The novelty is an architecture that allows simultaneous variation of both amplitude and frequency using low-cost components and traditional techniques. The small dimension of the system ...
Hyunki In - - 2011
It is important for a wearable robot to be compact and sufficiently light for use as an assistive device. Since human fingers are arranged in a row in dense space, the concept of traditional wearable robots using a rigid frame and a pin joint result in size and complexity problems. ...
Qi An - - 2011
Optimal function of prosthetic hands for activities of daily living requires knowledge of contact force; however, users of prosthetic hands must rely on visual feedback for object manipulation, requiring constant concentration. Vibrotactile stimulation was explored as a modality for force feedback over multiple testing sessions. Unimpaired participants (N=6) performed virtual ...
Yoshida Keisuke - - 2011
The plant mitochondrial respiratory system changes in its activity in response to light. This response has been thought to be important for ensuring cooperative function with the photosynthetic system. A recent study addressing light responses of the respiratory chain in Arabidopsis thaliana provided further insight into the role of mitochondria ...
Rodriguez Joyce - - 2011
This study examined the time course of cochlear suppression using a tone-burst suppressor to measure decrement of distortion-product otoacoustic emissions (DPOAEs). Seven normal-hearing subjects with ages ranging from 19 to 28 yr participated in the study. Each subject had audiometric thresholds ≤ 15 dB HL [re ANSI (2004) Specifications for ...
Dai Mingjia M Department of Neurology, Mount Sinai School of Medicine, New York, NY 10029, USA. - - 2011
The angular vestibulo-ocular reflex (aVOR) and optokinetic nystagmus (OKN) were elicited simultaneously at low frequencies to study effects of habituation of the velocity storage time constant in the vestibular system on motion sickness. Twenty-nine subjects, eleven of whom were susceptible to motion sickness from common transportation, were habituated by sinusoidal ...
Tatkov Stanislav - - 2011
The efficacy of intraluminal high frequency oscillating (HFO) airflow is controversial and debated in the literature. Therefore experiments were carried out in vitro on abattoir-derived ovine tracheae to investigate the effects of symmetrical HFO on tracheal mucus transport following infusion of a layer of artificial mucus (polyox). Tracheae were mounted ...
Gozli Davood G - - 2011
Our representation of the peripersonal space is tied to our representation of our bodies. This representation appears to be flexible and it can be updated to include the space in which tools work, particularly when the tool is actively used. One indicator of this update is the increased efficiency with ...
Linkenauger Sally A - - 2011
An embodied approach to the perception of spatial layout contends that the body is used as a 'perceptual ruler' with which individuals scale the perceived environmental layout. In support of this notion, previous research has shown that the perceived size of objects can be influenced by changes in the apparent ...
Petursdottir Anna Ingeborg - - 2011
Several studies have demonstrated effects of stimulus-stimulus pairing (SSP) on children's vocalizations, but numerous treatment failures have also been reported. The present study attempted to isolate procedural variables related to failures of SSP to condition speech sounds as reinforcers. Three boys diagnosed with autism-spectrum disorders participated. Phase 1 was designed ...
Wolbrecht Eric T ET Dep. of Mechanical Engineering, University of Idaho, Moscow, Idaho, USA. - - 2011
This paper presents the kinematic design of a single degree-of-freedom exoskeleton mechanism: a planar eight-bar mechanism for finger curling. The mechanism is part of a finger-thumb robotic device for hand therapy that will allow users to practice key pinch grip and finger-thumb opposition, allowing discrete control inputs for playing notes ...
Cooper Michael L - - 2010
In contrast to recent reports of localization-impaired transport in long slow-light waveguides, we demonstrate light transport in silicon coupled-resonator optical waveguides (CROWs) consisting of up to 235 coupled microrings without localization over frequency bands that are several hundred gigahertz wide. Furthermore, from the unique statistical signatures provided by time-domain propagation ...
Arora Ashish - - 2010
The authors describe a dual-mirror 90(∘) twisted periscope arrangement for transporting polarized light in air, wherein a general elliptic polarization state of the light is preserved at all wavelengths. It is experimentally demonstrated that in the wavelength range 400-1000 nm, this arrangement preserves the polarization state fairly well when using ...
Ihssen Niklas - - 2011
The course to alcohol dependence often starts with a preclinical period of heavy drinking. The present article reports functional magnetic resonance imaging data showing that even this pattern of alcohol consumption is associated with maladaptive neural responses to alcohol and other stimuli. When participants were confronted with visual cues related ...
Gindensperger Etienne - - 2010
The mechanism of photoisomerization of a Re(I) carbonyl-diimine complex under visible-light irradiation is deciphered by means of ab initio calculations. By highlighting the key role of triplet states as well as spin-orbit and vibronic couplings, we provide a clear picture of this complicated multi-step process.
Moran Michael E - - 2010
Thomas Alva Edison was an icon of American achievement who literally invented the 20th century. Although best known as the inventor of the electric light bulb, the phonograph, and motion pictures, he also left a lasting legacy via peripheral developmental applications, such as endoscopes. A review of published urologic writings ...
Daly Ian - - 2011
One of the major aims of BCI research is devoted to achieving faster and more efficient control of external devices. The identification of individual tap events in a motor imagery BCI is therefore a desirable goal. EEG is recorded from subjects performing and imagining finger taps with their left and ...
Güntekin Bahar - - 2010
According to previous results, negative emotional facial expressions elicit oscillatory beta responses. The present study analyzes event-related beta oscillations upon presentation of International Affective Picture System (IAPS) and aims to show whether behavior of beta in response to negative IAPS pictures also have similar dynamics. IAPS pictures (unpleasant, pleasant, and ...
Huang Xian-Rong - - 2010
Interactions between light and conducting microstructures or nanostructures can result in a variety of novel phenomena, but their underlying mechanisms have not been completely understood. From calculations of surface charge density waves on conducting gratings and by comparing them with classical surface plasmons, we revealed a general yet concrete picture ...
Yanik Ahmet A - - 2010
The extraordinary light transmission effect (EOT) through sub-wavelength nanoapertures in opaque metal films has lead to observation of a wide variety of exciting new optical phenomena. This remarkable effect is generally related to the interaction of the light with the extended plasmonic resonances on the surface of the metal film ...
Pappens Meike - - 2010
Human fear research has mostly applied exteroceptive stimuli to induce fear. Interoceptive sensations however can also be very threatening and play a major role in a number of anxiety disorders. In this study, we compared affective responses to inspiratory resistive loads with those to aversive pictures. During repeated administrations of ...
Gardner Jonathan S - - 2010
Two often cited but frequently confused pictorial cues to perceived depth are height in the picture plane (HPP) and distance to the horizon (DH). We report two psychophysical experiments that disentangled their influence on perception of relative depth in pictures of the interior of a schematic room. Experiment 1 showed ...
Mock Sean M - - 2009
A coupled pendulum oscillator experiment recently developed within the U.S. Naval Academy Physics Department seems a possible candidate for the Project Listen Up initiative. A plexiglass frame supported by four legs suspends two 500 g masses 30 cm below by two chains of paper clips each, meeting in the shape ...
Juricevic Igor - - 2009
Observers were shown wide-angle pictures of tiles on a ground plane and were asked about the aspect ratios of the tiles. The observers viewed the pictures from a fixed center of projection. Some of the tiles were in a path coming straight toward the observer. In one picture, the path ...
Wei Yuying - - 2009
Branching out: The mobility of linear polymers changes upon branching, which has a pronounced effect on processability and drawability. Regularly branched model polyolefins were studied by advanced solid-state NMR spectroscopy, and twist defects around the branches in the crystalline regions are identified. For lower branch content, the twisting motions are ...
Heyes Derren J - - 2009
H(+) but not H(-): The reduction reaction of protochlorophyllide catalyzed by protochlorophyllide oxidoreductase features solvent-slaved motions that control the proton- but not the hydride-tunneling mechanism. These motions imply a long-range dynamic network from the solvent to the enzyme active site that facilitate proton transfer (see picture, left). Motions for hydride ...
Rees Neil V - - 2009
On the move: Electrochemistry has been used to detect and monitor the motion of a single 330 microm sphere in both time and space (see picture). The motion was recorded simultaneously by video and chronoamperometry, which showed an excellent correlation. The ability to fabricate electrode arrays capable of spatial resolution ...
Cornelis Els V K - - 2009
Mirror reflections and planar rotations of a picture do not result in any variations concerning the internal geometrical layout of the objects depicted in the picture. We examined to what extent these picture plane transformations gave rise to perceptual differences. A large set of pictures was generated by mirror-reflecting and ...
Post Brechtje B Research Centre for English and Applied Linguistics, University of Cambridge, United Kingdom. - - 2008
Previous studies suggest that different neural and functional mechanisms are involved in the analysis of irregular (caught) and regular (filled) past tense forms in English. In particular, the comprehension and production of regular forms is argued to require processes of morpho-phonological assembly and disassembly, analysing these forms into a stem ...
Kaufmann Jürgen M - - 2008
We report two experiments in which participants classified familiarity and rated best-likeness of photorealistic spatial caricatures and anti-caricatures (up to a distortion level of 30%) in comparison to veridical pictures of famous faces (Experiment 1) and personally familiar faces (Experiment 2). In both experiments there was no evidence for a ...
Senkowski Daniel - - 2008
Picture yourself on a crowded sideway with people milling about. The acoustic and visual signals generated by the crowd provide you with complementary information about their locations and motion which needs to be integrated. It is not well understood how such inputs from different sensory channels are combined into unified ...
Bhushan Braj - - 2008
The majority of people throughout the world show extreme preference for the right hand. We studied lateral bias depicted in ancient Indian sculptures dating between the 7th and 9th centuries ad. A total of 288 sculptures were selected from various excavation sites/museums and the frequencies were computed on 13 different ...
Baikouzis Constantino - - 2008
Plutarch and Heraclitus believed a certain passage in the 20th book of the Odyssey ("Theoclymenus's prophecy") to be a poetic description of a total solar eclipse. In the late 1920s, Schoch and Neugebauer computed that the solar eclipse of 16 April 1178 B.C.E. was total over the Ionian Islands and ...
Lapenta Giovanni - - 2008
Within a MHD approach we find magnetic reconnection to progress in two entirely different ways. The first is well known: the laminar Sweet-Parker process. But a second, completely different and chaotic reconnection process is possible. This regime has properties of immediate practical relevance: (i) it is much faster, developing on ...
Walker David L - - 2008
The concept of the "extended amygdala", developed and explored by Lennart Heimer, Jose de Olmos, George Alheid, and their collaborators, has had an enormous impact on the field of neuroscience and on our own work. Measuring fear-potentiated startle test using conditioned stimuli that vary in length we suggest that the ...
Kittredge Audrey K AK Beckman Institute, University of Illinois, Urbana, IL 61801, USA. - - 2008
Some theories of lexical access in production locate the effect of lexical frequency at the retrieval of a word's phonological characteristics, as opposed to the prior retrieval of a holistic representation of the word from its meaning. Yet there is evidence from both normal and aphasic individuals that frequency may ...
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