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https://www.readbyqxmd.com/read/28806417/phonetic-complexity-affects-children-s-mandarin-tone-production-accuracy-in-disyllabic-words-a-perceptual-study
#1
Puisan Wong, Winifred Strange
This is the first study to examine the effect of phonetic contexts on children's lexical tone production. Mandarin tones in disyllabic words produced by forty-four 2- to 6-year-old children and twelve mothers were low-pass filtered to eliminate lexical information. Native Mandarin-speaking adults categorized the tones based on the pitch information in the filtered stimuli. All mothers' tones were categorized with ceiling accuracy. Counter to the findings in most previous studies on children's tone acquisition and the prevailing assumption in models of speech development that children acquire suprasegmental features much earlier than segmental features, this study found that children as old as six years of age have not mastered the production of Mandarin tones...
2017: PloS One
https://www.readbyqxmd.com/read/28805133/the-shape-of-things-to-come-in-speech-production-visual-form-interference-during-lexical-access
#2
Greig I de Zubicaray, Mia McLean, Frank Oppermann, Aidan Hegarty, Katie McMahon, Jörg D Jescheniak
Naming a picture is slower in categorically related compared to unrelated contexts, an effect termed semantic interference. This effect has informed the development of all contemporary models of lexical access in speech production. However, category members typically share visual features, so semantic interference might in part reflect this confound. Surprisingly little work has addressed this issue, and the relative absence of evidence for visual form interference has been proposed to be problematic for production models implementing competitive lexical selection mechanisms...
August 13, 2017: Quarterly Journal of Experimental Psychology: QJEP
https://www.readbyqxmd.com/read/28805109/glucose-regulation-and-face-recognition-deficits-in-older-adults-the-role-of-attention
#3
Nicola Jones, Leigh M Riby, Michael A Smith
The present study investigated the perceptual, attentional, and memory processes underlying face recognition deficits observed in older adults with impaired glucoregulation. Participants were categorized as good glucoregulators or poor glucoregulators on the basis of an oral glucose tolerance test. Using event-related potential (ERP) methodology, 23 participants (62-88 years) performed a 2-stimulus oddball task. Participants were asked to rate and memorize 10 "target" faces, which were then presented amongst 120 unfamiliar foils...
August 13, 2017: Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition
https://www.readbyqxmd.com/read/28803219/revealing-the-mechanisms-of-human-face-perception-using-dynamic-apertures
#4
Jennifer Murphy, Richard Cook
Faces are notoriously hard to perceive when turned upside-down. It is often claimed that perceptual decrements reflect a qualitative switch from parallel whole-face processing, to a serial analysis of individual features. To test this view, we examined observers' ability to categorize faces presented in their entirety, or viewed through a dynamic aperture that moved incrementally across the facial image. Exposing faces region-by-region disrupts holistic processing, but permits serial analysis of local features...
August 10, 2017: Cognition
https://www.readbyqxmd.com/read/28790943/the-effects-of-goal-relevance-and-perceptual-features-on-emotional-items-and-associative-memory
#5
Wei B Mao, Shu An, Xiao F Yang
Showing an emotional item in a neutral background scene often leads to enhanced memory for the emotional item and impaired associative memory for background details. Meanwhile, both top-down goal relevance and bottom-up perceptual features played important roles in memory binding. We conducted two experiments and aimed to further examine the effects of goal relevance and perceptual features on emotional items and associative memory. By manipulating goal relevance (asking participants to categorize only each item image as living or non-living or to categorize each whole composite picture consisted of item image and background scene as natural scene or manufactured scene) and perceptual features (controlling visual contrast and visual familiarity) in two experiments, we found that both high goal relevance and salient perceptual features (high salience of items vs...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28777728/rat-prefrontal-cortex-inactivations-during-decision-making-are-explained-by-bistable-attractor-dynamics
#6
Alex T Piet, Jeffrey C Erlich, Charles D Kopec, Carlos D Brody
Two-node attractor networks are flexible models for neural activity during decision making. Depending on the network configuration, these networks can model distinct aspects of decisions including evidence integration, evidence categorization, and decision memory. Here, we use attractor networks to model recent causal perturbations of the frontal orienting fields (FOF) in rat cortex during a perceptual decision-making task (Erlich, Brunton, Duan, Hanks, & Brody, 2015). We focus on a striking feature of the perturbation results...
August 4, 2017: Neural Computation
https://www.readbyqxmd.com/read/28776708/the-effect-of-category-learning-on-visual-attention-and-visual-representation
#7
Jonathan R Folstein, Shamsi S Monfared, Trevor Maravel
Subordinate-level category learning recruits neural resources associated with perceptual expertise, including the N250 component of the ERP, a posterolateral negative wave maximal between 230 and 330 ms. The N250 is a relatively late visual ERP and could plausibly be driven by attention to the features of categorized objects. Indeed, it has a latency and scalp distribution similar to the selection negativity (SN), an ERP component long known to be sensitive to attentional selection of target features. To clarify sensitivity of the N250 to attention and to more generally investigate the effect of category learning on attentional modulation of learned features, we independently manipulated subordinate-level category learning and target detection in a speeded paradigm designed to optimally elicit the SN and accompanying frontal selection positivity (FSP)...
August 4, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28771703/what-develops-in-infants-spatial-categorization-korean-infants-categorization-of-containment-and-tight-fit-relations
#8
Marianella Casasola, Yeojin A Ahn
Korean-learning infants' categorization of two spatial categories, one consistent and one inconsistent with the Korean semantic category of "kkita," was examined. Infants of 10 months (n = 32) and 18 months (n = 49) were tested on their categorization of containment or tight fit spatial relations. At 10 months, infants only formed a category of containment, but at 18 months, their categorization of tight fit was significantly stronger than containment. The results suggest that Korean infants benefit from their language environment in forming a category of tight fit when the exemplars are perceptually diverse...
August 3, 2017: Child Development
https://www.readbyqxmd.com/read/28758786/developmental-changes-in-infants-categorization-of-anger-and-disgust-facial-expressions
#9
Ashley L Ruba, Kristin M Johnson, Lasana T Harris, Makeba Parramore Wilbourn
For decades, scholars have examined how children first recognize emotional facial expressions. This research has found that infants younger than 10 months can discriminate negative, within-valence facial expressions in looking time tasks, and children older than 24 months struggle to categorize these expressions in labeling and free-sort tasks. Specifically, these older children, and even adults, consistently misidentify disgust expressions as anger. Although some scholars have hypothesized that young infants would also be unable to categorize anger and disgust expressions, this question has not been empirically tested...
July 31, 2017: Developmental Psychology
https://www.readbyqxmd.com/read/28745216/insights-in-developmental-coordination-disorder
#10
Marie Farmer, Bernard Echenne, Regen Drouin, M Hamed Bentourkia
BACKGROUND: Developmental Coordination Disorder (DCD) is a neurological impairment occurring in nearly 6% of general population, and sometimes mimics other developmental disorders like Attention Deficit Hyperactivity Disorder (ADHD) or, in the most severe cases, intellectual deficiency. OBJECTIVE: We propose in this review a contribution on this matter in order to provide better insights in DCD including clinical symptoms and pathophysiological explanations that would identify this entity from others...
July 26, 2017: Current Pediatric Reviews
https://www.readbyqxmd.com/read/28736607/typical-versus-delayed-speech-onset-influences-verbal-reporting-of-autistic-interests
#11
Liliane Chiodo, Steve Majerus, Laurent Mottron
BACKGROUND: The distinction between autism and Asperger syndrome has been abandoned in the DSM-5. However, this clinical categorization largely overlaps with the presence or absence of a speech onset delay which is associated with clinical, cognitive, and neural differences. It is unknown whether these different speech development pathways and associated cognitive differences are involved in the heterogeneity of the restricted interests that characterize autistic adults. METHOD: This study tested the hypothesis that speech onset delay, or conversely, early mastery of speech, orients the nature and verbal reporting of adult autistic interests...
2017: Molecular Autism
https://www.readbyqxmd.com/read/28732659/eye-tracking-measures-of-uncertainty-during-perceptual-decision-making
#12
Tad T Brunyé, Aaron L Gardony
Perceptual decision making involves gathering and interpreting sensory information to effectively categorize the world and inform behavior. For instance, a radiologist distinguishing the presence versus absence of a tumor, or a luggage screener categorizing objects as threatening or non-threatening. In many cases, sensory information is not sufficient to reliably disambiguate the nature of a stimulus, and resulting decisions are done under conditions of uncertainty. The present study asked whether several oculomotor metrics might prove sensitive to transient states of uncertainty during perceptual decision making...
July 18, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28732642/performance-of-the-phonatory-deviation-diagram-in-the-evaluation-of-rough-and-breathy-synthesized-voices
#13
Leonardo Wanderley Lopes, Jonas Almeida de Freitas, Anna Alice Almeida, Priscila Oliveira Costa Silva, Giorvan Ânderson Dos Santos Alves
INTRODUCTION: Voice disorders alter the sound signal in several ways, combining several types of vocal emission disturbances and noise. The Phonatory Deviation Diagram (PDD) is a two-dimensional chart that allows the evaluation of the vocal signal based on the combination of periodicity (jitter, shimmer, and correlation coefficient) and noise (Glottal to Noise Excitation - GNE) measurements. The use of synthesized signals, where one has a greater control and knowledge of the production conditions, may allow a better understanding of the physiological and acoustic mechanisms underlying the vocal emission and its main perceptual-auditory correlates regarding the intensity of the deviation and types of vocal quality...
July 5, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28712468/the-impact-of-counter-perceptual-testimony-on-children-s-categorization-after-a-delay
#14
Samuel Ronfard, Jonathan D Lane, Muanjing Wang, Paul L Harris
When preschoolers are presented with a label for an entity that conflicts with its appearance, they sometimes rely on the new label rather than on the entity's appearance to categorize the entity and to infer its properties. We examined whether children's learning from such claims is short-lived or long-lasting and whether the persistence of their learning depends on the degree of fit between those claims and the available perceptual evidence. Children aged 3-5years (N=71) were asked to categorize hybrids. These hybrids combined 75% of the features from one animal or object with 25% of the features from a different animal or object...
November 2017: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/28704729/longitudinal-association-between-physical-activity-engagement-during-adolescence-and-mental-health-outcomes-in-young-adults-a-21-year-birth-cohort-study
#15
Shuichi Suetani, Abdullah Mamun, Gail M Williams, Jake M Najman, John J McGrath, James G Scott
OBJECTIVE: Previous studies provide mixed evidence that physical activity engagement (PAE) in adolescence is associated with later mental health outcomes. This study aimed to examine the association between PAE at age 14 and mental health outcomes at age 21 using a large birth cohort study. MATERIAL AND METHODS: Prospective data from the Mater-University of Queensland Study of Pregnancy, consisting of 3493 young adults, were analyzed. PAE at age 14 was estimated using self-report, and participants were categorized into; (1) frequent, (2) infrequent, or (3) no PAE group...
July 1, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28700445/auditory-brainstem-implant-array-position-varies-widely-among-adult-and-pediatric-patients-and-is-associated-with-perception
#16
Samuel R Barber, Elliott D Kozin, Aaron K Remenschneider, Sidharth V Puram, Max Smith, Barbara S Herrmann, Mary E Cunnane, M Christian Brown, Daniel J Lee
OBJECTIVES: The auditory brainstem implant (ABI) provides sound awareness to patients who are ineligible for cochlear implantation. Auditory performance varies widely among similar ABI cohorts. We hypothesize that differences in electrode array position contribute to this variance. Herein, we classify ABI array position based on postoperative imaging and investigate the relationship between position and perception. DESIGN: Retrospective review of pediatric and adult ABI users with postoperative computed tomography...
July 11, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28683424/prenatal-phenolic-compounds-exposure-and-neurobehavioral-development-at-2-and-7years-of-age
#17
Ching-Chun Lin, Chun-Ju Chien, Meng-Shan Tsai, Chia-Jung Hsieh, Wu-Shiun Hsieh, Pau-Chung Chen
BACKGROUND: Phenolic compounds such as bisphenol A (BPA), nonylphenol (NP), and octylphenol (OP) are known as endocrine-disrupting compounds and are commonly used. Their impacts on the neurodevelopment of children are inconclusive. The current study aims to investigate the association between umbilical cord blood levels of BPA, NP, OP and neurodevelopmental outcomes at 2 and 7years of age. METHODS: The study was based on the Taiwan Birth Panel Study, a prospective birth cohort...
July 3, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28680950/change-deafness-for-real-spatialized-environmental-scenes
#18
Jeremy Gaston, Kelly Dickerson, Daniel Hipp, Peter Gerhardstein
The everyday auditory environment is complex and dynamic; often, multiple sounds co-occur and compete for a listener's cognitive resources. 'Change deafness', framed as the auditory analog to the well-documented phenomenon of 'change blindness', describes the finding that changes presented within complex environments are often missed. The present study examines a number of stimulus factors that may influence change deafness under real-world listening conditions. Specifically, an AX (same-different) discrimination task was used to examine the effects of both spatial separation over a loudspeaker array and the type of change (sound source additions and removals) on discrimination of changes embedded in complex backgrounds...
2017: Cognitive Research: Principles and Implications
https://www.readbyqxmd.com/read/28674173/occipitotemporal-category-representations-are-sensitive-to-abstract-category-boundaries-defined-by-generalization-demands
#19
Kurt Braunlich, Zhiya Liu, Carol A Seger
Categorization involves organizing perceptual information so as maximize differences along dimensions that predict class membership, while minimizing differences along dimensions that do not. In the current experiment, we investigated how neural representations reflecting learned category structure vary according to generalization demands. We asked male and female human participants to switch between two rules when determining whether stimuli should be considered members of a single known category. When categorizing according to the "strict" rule, participants were required to limit generalization in order to make fine-grained distinctions between stimuli and the category prototype...
July 3, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28669719/changing-similarity-stable-and-flexible-modulations-of-psychological-dimensions
#20
Michael Dieciuc, Nelson A Roque, Jonathan R Folstein
Successfully categorizing objects requires discriminating between relevant and irrelevant dimensions (e.g., shape, color). Categorization can lead to changes in the visual system that stretch psychological space, making relevant dimensions more distinct and irrelevant dimensions more similar. These changes are known as dimensional modulation (DM) and they can be both stable and flexible in nature. The current study examined the interaction between stable DM and flexible DM, as well as the time course of relative changes in similarity...
June 29, 2017: Brain Research
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