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Perceptual learning

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https://www.readbyqxmd.com/read/28527540/whispering-by-individuals-using-tracheoesophageal-speech
#1
Jeff Searl
OBJECTIVES: This study compared whispering attempts by adults using tracheoesophageal (TE) speech with those by adults with a larynx. Comparisons were based on listener judgments, visual-perceptual assessment of spectrograms, and measures of the acoustic signal. STUDY DESIGN: This was a prospective, cross-sectional study. METHODS: Seventeen TE and 10 laryngeal speakers produced sentences in a whisper and in their spoken voice. Listeners judged sentences as whispered or spoken...
May 17, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28527319/camera-to-subject-distance-affects-face-configuration-and-perceived-identity
#2
Eilidh Noyes, Rob Jenkins
Face identification is reliable for viewers who are familiar with the face, and unreliable for viewers who are not. One account of this contrast is that people become good at recognising a face by learning its configuration-the specific pattern of feature-to-feature measurements. In practice, these measurements differ across photos of the same face because objects appear more flat or convex depending on their distance from the camera. Here we connect this optical understanding to face configuration and identification accuracy...
May 17, 2017: Cognition
https://www.readbyqxmd.com/read/28521154/-the-world-is-upside-down-the-innsbruck-goggle-experiments-of-theodor-erismann-1883-1961-and-ivo-kohler-1915-1985
#3
Pierre Sachse, Ursula Beermann, Markus Martini, Thomas Maran, Markus Domeier, Marco R Furtner
The "Innsbruck Goggle Experiments" on long-term wearing of reversing mirrors, prismatic and half prismatic goggles, and colored half goggles represent a milestone in research on adaptation (adapting to the introduced "disturbance") and after-effects (after removal of the "disturbance"). By means of these goggles it is, for example, possible to invert or distort the visual field (such as flipping top and bottom or left and right), as well as to observe how individuals learn to change the image back to vertical or recognize left and right...
April 23, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28508919/cognitive-development-of-school-age-hypoplastic-left-heart-syndrome-survivors-a-single-center-study
#4
REVIEW
Raphael D Oberhuber, Sonja Huemer, Rudolf Mair, Eva Sames-Dolzer, Michaela Kreuzer, Gerald Tulzer
Neurological and radiologic research results show an abnormal cerebral microstructure as well as abnormal neurodevelopment in patients treated for hypoplastic left heart syndrome. The aim of this study was to assess the varying cognitive performance these children have developed in dependence upon prenatal diagnosis, surgical techniques, surgical learning effects, anatomy, perfusion techniques, gender, pedagogic, and sociodemographic parameters in comparison to age-adjusted normative values. School-age children (6...
May 16, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28504938/perceptual-real-time-2d-to-3d-conversion-using-cue-fusion
#5
Thomas Leimkuehler, Petr Kellnhofer, Tobias Ritschel, Karol Myszkowski, Hans-Peter Seidel
We propose a system to infer binocular disparity from a monocular video stream in real-time. Different from classic reconstruction of physical depth in computer vision, we compute perceptually plausible disparity, that is numerically inaccurate, but results in a very similar overall depth impression with plausible overall layout, sharp edges, fine details and agreement between luminance and disparity. We use several simple monocular cues to estimate disparity maps and confidence maps of low spatial and temporal resolution in real-time...
May 11, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28499139/a-novel-form-of-perceptual-attunement-context-dependent-perception-of-a-native-contrast-in-14-month-old-infants
#6
Mathilde Fort, Perrine Brusini, M Julia Carbajal, Yue Sun, Sharon Peperkamp
By the end of their first year of life, infants have become experts in discriminating the sounds of their native language, while they have lost the ability to discriminate non-native contrasts. This type of phonetic learning is referred to as perceptual attunement. In the present study, we investigated the emergence of a context-dependent form of perceptual attunement in infancy. Indeed, some native contrasts are not discriminated in certain phonological contexts by adults, due to the presence of a language-specific process that neutralizes the contrasts in those contexts...
April 26, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28498003/a-novel-approach-to-assessing-professionalism-in-preclinical-medical-students-using-multisource-feedback-through-paired-self-and-peer-evaluations
#7
Amanda R Emke, Steven Cheng, Ling Chen, Dajun Tian, Carolyn Dufault
Phenomenon: Professionalism is integral to the role of the physician. Most professionalism assessments in medical training are delayed until clinical rotations where multisource feedback is available. This leaves a gap in student assessment portfolios and potentially delays professional development. APPROACH: A total of 246 second-year medical students (2013-2015) completed self- and peer assessments of professional behaviors in 2 courses following a series of Team-Based Learning exercises...
May 12, 2017: Teaching and Learning in Medicine
https://www.readbyqxmd.com/read/28496421/the-positivity-bias-phenomenon-in-face-perception-given-different-information-on-ability
#8
Sasa Zhao, Yanhui Xiang, Jiushu Xie, Yanyan Ye, Tianfeng Li, Lei Mo
The negativity bias has been shown in many fields, including in face processing. We assume that this bias stems from the potential threat inlayed in the stimuli (e.g., negative moral behaviors) in previous studies. In the present study, we conducted one behavioral and one event-related potentials (ERPs) experiments to test whether the positivity bias rather than negativity bias will arise when participants process information whose negative aspect involves no threat, i.e., the ability information. In both experiments, participants first completed a valence rating (negative-to-positive) of neutral facial expressions...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28495597/the-learned-reinterpretation-of-fluency-in-amnesia
#9
Marie Geurten, Sylvie Willems
Fluency is one of many cues that are involved in memory decisions. To date, however, the extent to which fluency-based decisions are preserved in amnesia is not yet clear. In this study, we tested and found differences in how patients with amnesia (n=8) and control participants (n=16) use fluency when making recognition decisions (Experiment 1). Our results suggested that these differences could be due to changes in the readiness with which patients attribute the subjective feeling of fluency to pre-exposure when an alternative explanation is available (i...
May 8, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28487827/an-automatic-prolongation-detection-approach-in-continuous-speech-with-robustness-against-speaking-rate-variations
#10
Iman Esmaili, Nader Jafarnia Dabanloo, Mansour Vali
In recent years, many methods have been introduced for supporting the diagnosis of stuttering for automatic detection of prolongation in the speech of people who stutter. However, less attention has been paid to treatment processes in which clients learn to speak more slowly. The aim of this study was to develop a method to help speech-language pathologists (SLPs) during diagnosis and treatment sessions. To this end, speech signals were initially parameterized to perceptual linear predictive (PLP) features...
January 2017: Journal of Medical Signals and Sensors
https://www.readbyqxmd.com/read/28487047/anodal-and-cathodal-electrical-stimulation-over-v5-improves-motion-perception-by-signal-enhancement-and-noise-reduction
#11
Luca Battaglini, Stefano Noventa, Clara Casco
BACKGROUND: The effect that transcranial direct current stimulation (tDCS) has on discrimination of coherent motion (CM) signals in a field of randomly moving dots (noise) can be accounted for by both noise reduction and signal enhancement. OBJECTIVE: To distinguish between noise reduction and signal enhancement, we monitored the discrimination of the correct CM direction as a function of the coherence level (using the psychophysical method of constant stimuli)...
April 28, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28481915/stimulus-discriminability-may-bias-value-based-probabilistic-learning
#12
Iris Schutte, Heleen A Slagter, Anne G E Collins, Michael J Frank, J Leon Kenemans
Reinforcement learning tasks are often used to assess participants' tendency to learn more from the positive or more from the negative consequences of one's action. However, this assessment often requires comparison in learning performance across different task conditions, which may differ in the relative salience or discriminability of the stimuli associated with more and less rewarding outcomes, respectively. To address this issue, in a first set of studies, participants were subjected to two versions of a common probabilistic learning task...
2017: PloS One
https://www.readbyqxmd.com/read/28481145/lack-of-motor-inhibition-as-a-marker-of-learning-difficulties-of-bimanual-coordination-in-teenagers-with-developmental-coordination-disorder
#13
Mélody Blais, Charlène Baly, Maëlle Biotteau, Jean-Michel Albaret, Yves Chaix, Jessica Tallet
This study tested the learning of a new bimanual coordination in teenagers with and without Developmental Coordination Disorder (DCD). Both groups improved accuracy of the new coordination. No difference was found on stability. But DCD teenagers exhibited an overall higher number of additional taps, suggesting a persistent lack of motor inhibition during learning. Moreover, teenagers with the lowest scores of motor abilities present the highest number of additional taps. All these results suggest that this number of additional taps (rather than traditional measures of accuracy and stability) could be a good marker of perceptual-motor learning deficit in DCD...
May 8, 2017: Developmental Neuropsychology
https://www.readbyqxmd.com/read/28471206/the-complementary-roles-of-auditory-and-motor-information-evaluated-in-a-bayesian-perceptuo-motor-model-of-speech-perception
#14
Raphaël Laurent, Marie-Lou Barnaud, Jean-Luc Schwartz, Pierre Bessière, Julien Diard
There is a consensus concerning the view that both auditory and motor representations intervene in the perceptual processing of speech units. However, the question of the functional role of each of these systems remains seldom addressed and poorly understood. We capitalized on the formal framework of Bayesian Programming to develop COSMO (Communicating Objects using Sensory-Motor Operations), an integrative model that allows principled comparisons of purely motor or purely auditory implementations of a speech perception task and tests the gain of efficiency provided by their Bayesian fusion...
May 4, 2017: Psychological Review
https://www.readbyqxmd.com/read/28464671/adaptation-to-novel-foreign-accented-speech-and-retention-of-benefit-following-training-influence-of-aging-and-hearing-loss
#15
Rebecca E Bieber, Sandra Gordon-Salant
Adaptation to speech with a foreign accent is possible through prior exposure to talkers with that same accent. For young listeners with normal hearing, short term, accent-independent adaptation to a novel foreign accent is also facilitated through exposure training with multiple foreign accents. In the present study, accent-independent adaptation is examined in younger and older listeners with normal hearing and older listeners with hearing loss. Retention of training benefit is additionally explored. Stimuli for testing and training were HINT sentences recorded by talkers with nine distinctly different accents...
April 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28460299/a-perceptual-advantage-for-onomatopoeia-in-early-word-learning-evidence-from-eye-tracking
#16
Catherine E Laing
A perceptual advantage for iconic forms in infant language learning has been widely reported in the literature, termed the "sound symbolism bootstrapping hypothesis" by Imai and Kita (2014). However, empirical research in this area is limited mainly to sound symbolic forms, which are very common in languages such as Japanese but less so in Indo-European languages such as English. In this study, we extended this body of research to onomatopoeia-words that are thought to be present across most of the world's languages and that are known to be dominant in infants' early lexicons...
April 28, 2017: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/28457745/sensory-hypersensitivity-predicts-enhanced-attention-capture-by-faces-in-the-early-development-of-asd
#17
E J H Jones, G Dawson, S J Webb
Sensory sensitivity is prevalent among young children with ASD, but its relation to social communication impairment is unclear. Recently, increased sensory hypersensitivity has been linked to greater activity of the neural salience network (Green et al., 2016). Increased neural sensitivity to stimuli, especially social stimuli, could provide greater opportunity for social learning and improved outcomes. Consistent with this framework, in Experiment 1 we found that parent report of greater sensory hypersensitivity at 2 years in toddlers with ASD (N=27) was predictive of increased neural responsiveness to social stimuli (larger amplitude event-related potential/ERP responses to faces at P1, P400 and Nc) at 4 years, and this in turn was related to parent report of increased social approach at 4 years...
April 12, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28444371/neural-correlates-of-both-perception-and-memory-for-objects-in-the-rodent-perirhinal-cortex
#18
Jae-Rong Ahn, Inah Lee
Despite its anatomical positioning as an interface between the perceptual and memory systems, the perirhinal cortex (PER) has long been considered dedicated for object recognition memory. Whether the PER is also involved in object perception has been intensely debated in recent studies, but physiological evidence has been lacking. We recorded single units from the PER while the rat made categorical responses immediately after sampling a visual object as the originally learned objects were ambiguously morphed to varying degrees...
April 24, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28443053/perceptual-improvement-of-lexical-tones-in-infants-effects-of-tone-language-experience
#19
Feng-Ming Tsao
To learn words in a tonal language, tone-language learners should not only develop better abilities for perceiving consonants and vowels, but also for lexical tones. The divergent trend of enhancing sensitivity to native phonetic contrasts and reduced sensitivity to non-native phonetic contrast is theoretically essential to evaluate effects of listening to an ambient language on speech perception development. The loss of sensitivity in discriminating lexical tones among non-tonal language-learning infants was apparent between 6 and 12 months of age, but only few studies examined trends of differentiating native lexical tones in infancy...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28442360/the-oxtr-gene-implicit-learning-and-social-processing-does-empathy-evolve-from-perceptual-skills-for-details
#20
Martin Melchers, Christian Montag, Sebastian Markett, Nawael Niazy, Johanna Groß-Bölting, Jelena Zimmermann, Martin Reuter
Oxytocin is an important messenger in the brain that has been linked to a variety of social functions in pharmacological studies. Besides, functional genetic variations on the oxytocin receptor gene have been repeatedly associated with social processing and functioning. Despite this knowledge, there are very few studies investigating the mechanisms that may explain the link between oxytocin and social functions. In the endeavor to fill this gap in the literature, the current study searches for associations between the prominent rs2268498 polymorphism on the oxytocin receptor gene and participants' ability to perceive and store implicit social information, which is a fundamental function in social information processing...
April 22, 2017: Behavioural Brain Research
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