keyword
MENU ▼
Read by QxMD icon Read
search

perceptual categorization

keyword
https://www.readbyqxmd.com/read/28079970/categorizing-the-magnitude-and-frequency-of-exposure-to-uncivil-behaviors-a-new-approach-for-more-meaningful-interventions
#1
Dena Evans
PURPOSE: To examine turnover intentions, as well as the prevalence and frequency of uncivil behaviors, from the perspective of registered nurses, respiratory therapists, and imaging professionals, using a new method to categorize exposure magnitude. DESIGN AND METHODS: Data were collected using the 22-item Negative Acts Questionnaire-Revised (NAQ-R). Additional items, informed by Price and Mueller's causal model of turnover, were included, as were select demographic variables...
January 12, 2017: Journal of Nursing Scholarship
https://www.readbyqxmd.com/read/28073112/space-and-objects-on-the-phenomenology-and-cognitive-neuroscience-of-anomalous-perception-in-schizophrenia-ancillary-article-to-eawe-domain-1
#2
Steven M Silverstein, Docia Demmin, Borut Škodlar
BACKGROUND/AIMS: Perception of space and objects is a traditional focus within phenomenology, and disturbances in these aspects of perception among people with schizophrenia have long been discussed within phenomenological psychiatry. Despite this, there has been little empirical work on the causes and effects of most of these perceptual alterations in people with schizophrenia. Progress towards this goal can be accelerated by the use of EAWE (Examination of Anomalous World Experience), an interview-based tool to elicit, categorize, and quantify abnormal perceptual and other experiential phenomena...
January 11, 2017: Psychopathology
https://www.readbyqxmd.com/read/28070789/priming-facial-gender-and-emotional-valence-the-influence-of-spatial-frequency-on-face-perception-in-asd
#3
Steven Vanmarcke, Johan Wagemans
Adolescents with and without autism spectrum disorder (ASD) performed two priming experiments in which they implicitly processed a prime stimulus, containing high and/or low spatial frequency information, and then explicitly categorized a target face either as male/female (gender task) or as positive/negative (Valence task). Adolescents with ASD made more categorization errors than typically developing adolescents. They also showed an age-dependent improvement in categorization speed and had more difficulties with categorizing facial expressions than gender...
January 9, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28060872/audio-visual-perception-of-gender-by-infants-emerges-earlier-for-adult-directed-speech
#4
Anne-Raphaëlle Richoz, Paul C Quinn, Anne Hillairet de Boisferon, Carole Berger, Hélène Loevenbruck, David J Lewkowicz, Kang Lee, Marjorie Dole, Roberto Caldara, Olivier Pascalis
Early multisensory perceptual experiences shape the abilities of infants to perform socially-relevant visual categorization, such as the extraction of gender, age, and emotion from faces. Here, we investigated whether multisensory perception of gender is influenced by infant-directed (IDS) or adult-directed (ADS) speech. Six-, 9-, and 12-month-old infants saw side-by-side silent video-clips of talking faces (a male and a female) and heard either a soundtrack of a female or a male voice telling a story in IDS or ADS...
2017: PloS One
https://www.readbyqxmd.com/read/28056343/perceptual-decision-making-in-rodents-monkeys-and-humans
#5
REVIEW
Timothy D Hanks, Christopher Summerfield
Perceptual decision making is the process by which animals detect, discriminate, and categorize information from the senses. Over the past two decades, understanding how perceptual decisions are made has become a central theme in the neurosciences. Exceptional progress has been made by recording from single neurons in the cortex of the macaque monkey and using computational models from mathematical psychology to relate these neural data to behavior. More recently, however, the range of available techniques and paradigms has dramatically broadened, and researchers have begun to harness new approaches to explore how rodents and humans make perceptual decisions...
January 4, 2017: Neuron
https://www.readbyqxmd.com/read/28008804/alveolar-and-velarized-laterals-in-albanian-and-in-the-viennese-dialect
#6
Sylvia Moosmüller, Carolin Schmid, Christian H Kasess
A comparison of alveolar and velarized lateral realizations in two language varieties, Albanian and the Viennese dialect, has been performed. Albanian distinguishes the two laterals phonemically, whereas in the Viennese dialect, the velarized lateral was introduced by language contact with Czech immigrants. A categorical distinction between the two lateral phonemes is fully maintained in Albanian. Results are not as straightforward in the Viennese dialect. Most prominently, female speakers, if at all, realize the velarized lateral in word-final position, thus indicating the application of a phonetically motivated process...
December 2016: Language and Speech
https://www.readbyqxmd.com/read/27940151/neural-correlates-of-the-affective-properties-of-spontaneous-and-volitional-laughter-types
#7
Nadine Lavan, Georgia Rankin, Nicole Lorking, Sophie Scott, Carolyn McGettigan
Previous investigations of vocal expressions of emotion have identified acoustic and perceptual distinctions between expressions of different emotion categories, and between spontaneous and volitional (or acted) variants of a given category. Recent work on laughter has identified relationships between acoustic properties of laughs and their perceived affective properties (arousal and valence) that are similar across spontaneous and volitional types (Bryant & Aktipis, 2014; Lavan et al., 2016). In the current study, we explored the neural correlates of such relationships by measuring modulations of the BOLD response in the presence of itemwise variability in the subjective affective properties of spontaneous and volitional laughter...
December 9, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27916015/the-development-of-categorical-perception-of-mandarin-tones-in-four-to-seven-year-old-children
#8
Fei Chen, Gang Peng, Nan Yan, Lan Wang
To track the course of development in children's fine-grained perception of Mandarin tones, the present study explored how categorical perception (CP) of Mandarin tones emerges along age among 70 four- to seven-year-old children and 16 adults. Prominent discrimination peaks were found for both the child and the adult groups, and they were well aligned with the corresponding identification crossovers. Moreover, six-year-olds showed a much narrower width (i.e. a sharper slope) compared to younger children, and have already acquired adult-like identification competence of Mandarin high-level and mid-rising tones...
December 5, 2016: Journal of Child Language
https://www.readbyqxmd.com/read/27914402/stimulus-directed-attention-attenuates-lexically-guided-perceptual-learning
#9
Michael McAuliffe, Molly Babel
Studies on perceptual learning are motivated by phonetic variation that listeners encounter across speakers, items, and context. In this study, the authors investigate what control the listener has over the perceptual learning of ambiguous /s/ pronunciations through inducing changes in their attentional set. Listeners' attention is manipulated during a lexical decision exposure task such that their attention is directed at the word-level for comprehension-oriented listening or toward the signal for perception-oriented listening...
September 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27900467/what-makes-a-smiling-face-look-happy-visual-saliency-distinctiveness-and-affect
#10
Manuel G Calvo, Aida Gutiérrez-García, Mario Del Líbano
We investigated the relative contribution of (a) perceptual (eyes and mouth visual saliency), (b) conceptual or categorical (eye expression distinctiveness), and (c) affective (rated valence and arousal) factors, and (d) specific morphological facial features (Action Units; AUs), to the recognition of facial happiness. The face stimuli conveyed truly happy expressions with a smiling mouth and happy eyes, or blended expressions with a smile but non-happy eyes (neutral, sad, fearful, disgusted, surprised, or angry)...
November 29, 2016: Psychological Research
https://www.readbyqxmd.com/read/27893274/perceptual-adaptation-of-vowels-generalizes-across-the-phonology-and-does-not-require-local-context
#11
Kateřina Chládková, Václav Jonáš Podlipský, Anastasia Chionidou
Listeners usually understand without difficulty even speech that sounds atypical. When they encounter noncanonical realizations of speech sounds, listeners can make short-term adjustments of their long-term representations of those sounds. Previous research, focusing mostly on adaptation in consonants, has suggested that for perceptual adaptation to take place some local cues (lexical, phonotactic, or visual) have to guide listeners' interpretation of the atypical sounds. In the present experiment we investigated perceptual adaptation in vowels...
November 28, 2016: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/27875201/categorical-colormap-optimization-with-visualization-case-studies
#12
H Fang, S Walton, E Delahaye, J Harris, D A Storchak, M Chen
Mapping a set of categorical values to different colors is an elementary technique in data visualization. Users of visualization software routinely rely on the default colormaps provided by a system, or colormaps suggested by software such as ColorBrewer. In practice, users often have to select a set of colors in a semantically meaningful way (e.g., based on conventions, color metaphors, and logological associations), and consequently would like to ensure their perceptual differentiation is optimized. In this paper, we present an algorithmic approach for maximizing the perceptual distances among a set of given colors...
January 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/27875168/colorgorical-creating-discriminable-and-preferable-color-palettes-for-information-visualization
#13
Connor C Gramazio, David H Laidlaw, Karen B Schloss
We present an evaluation of Colorgorical, a web-based tool for creating discriminable and aesthetically preferable categorical color palettes. Colorgorical uses iterative semi-random sampling to pick colors from CIELAB space based on user-defined discriminability and preference importances. Colors are selected by assigning each a weighted sum score that applies the user-defined importances to Perceptual Distance, Name Difference, Name Uniqueness, and Pair Preference scoring functions, which compare a potential sample to already-picked palette colors...
January 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/27872293/emergence-of-an-abstract-categorical-code-enabling-the-discrimination-of-temporally-structured-tactile-stimuli
#14
Román Rossi-Pool, Emilio Salinas, Antonio Zainos, Manuel Alvarez, José Vergara, Néstor Parga, Ranulfo Romo
The problem of neural coding in perceptual decision making revolves around two fundamental questions: (i) How are the neural representations of sensory stimuli related to perception, and (ii) what attributes of these neural responses are relevant for downstream networks, and how do they influence decision making? We studied these two questions by recording neurons in primary somatosensory (S1) and dorsal premotor (DPC) cortex while trained monkeys reported whether the temporal pattern structure of two sequential vibrotactile stimuli (of equal mean frequency) was the same or different...
December 6, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27870892/body-weight-can-change-how-your-emotions-are-perceived
#15
Yujung Oh, Norah C Hass, Seung-Lark Lim
Accurately interpreting other's emotions through facial expressions has important adaptive values for social interactions. However, due to the stereotypical social perception of overweight individuals as carefree, humorous, and light-hearted, the body weight of those with whom we interact may have a systematic influence on our emotion judgment even though it has no relevance to the expressed emotion itself. In this experimental study, we examined the role of body weight in faces on the affective perception of facial expressions...
2016: PloS One
https://www.readbyqxmd.com/read/27866990/longitudinal-auditory-learning-facilitates-auditory-cognition-as-revealed-by-microstate-analysis
#16
Nathalie Giroud, Ulrike Lemke, Philip Reich, Katarina L Matthes, Martin Meyer
The current study investigates cognitive processes as reflected in late auditory-evoked potentials as a function of longitudinal auditory learning. A normal hearing adult sample (n=15) performed an active oddball task at three consecutive time points (TPs) arranged at two week intervals, and during which EEG was recorded. The stimuli comprised of syllables consisting of a natural fricative (/sh/,/s/,/f/) embedded between two /a/ sounds, as well as morphed transitions of the two syllables that served as deviants...
November 17, 2016: Biological Psychology
https://www.readbyqxmd.com/read/27858379/effects-of-varying-presentation-time-on-long-term-recognition-memory-for-scenes-verbatim-and-gist-representations
#17
Fahad N Ahmad, Morris Moscovitch, William E Hockley
Konkle, Brady, Alvarez and Oliva (Psychological Science, 21, 1551-1556, 2010) showed that participants have an exceptional long-term memory (LTM) for photographs of scenes. We examined to what extent participants' exceptional LTM for scenes is determined by presentation time during encoding. In addition, at retrieval, we varied the nature of the lures in a forced-choice recognition task so that they resembled the target in gist (i.e., global or categorical) information, but were distinct in verbatim information (e...
November 17, 2016: Memory & Cognition
https://www.readbyqxmd.com/read/27814562/gender-differences-in-category-specificity-do-not-reflect-innate-dispositions
#18
Christian Gerlach, Guido Gainotti
It is well established that certain categories of objects are processed more efficiently than others in specific tasks; a phenomenon known as category-specificity in perceptual and conceptual processing. In the last two decades there have also been several reports of gender differences in category-specificity. In the present experiments we test the proposition that such gender differences have an evolutionary origin. If they do, we would expect them to emerge even when the population tested comprises young individuals raised in a gender-equality oriented society...
October 15, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/27803794/the-time-course-of-ultrarapid-categorization-the-influence-of-scene-congruency-and-top-down-processing
#19
Steven Vanmarcke, Filip Calders, Johan Wagemans
Although categorization can take place at different levels of abstraction, classic studies on semantic labeling identified the basic level, for example, dog, as entry point for categorization. Ultrarapid categorization tasks have contradicted these findings, indicating that participants are faster at detecting superordinate-level information, for example, animal, in a complex visual image. We argue that both seemingly contradictive findings can be reconciled within the framework of parallel distributed processing and its successor Leabra (Local, Error-driven and Associative, Biologically Realistic Algorithm)...
September 2016: I-Perception
https://www.readbyqxmd.com/read/27794320/development-of-a-multi-category-psychometric-function-to-model-categorical-loudness-measurements
#20
Andrea C Trevino, Walt Jesteadt, Stephen T Neely
A multi-category psychometric function (MCPF) is introduced for modeling the stimulus-level dependence of perceptual categorical probability distributions. The MCPF is described in the context of individual-listener categorical loudness scaling (CLS) data. During a CLS task, listeners select the loudness category that best corresponds to their perception of the presented stimulus. In this study, CLS MCPF results are reported for 37 listeners (15 normal hearing, 22 with hearing loss). Individual-listener MCPFs were parameterized, and a principal component analysis (PCA) was used to identify sources of inter-subject variability and reduce the dimensionality of the data...
October 2016: Journal of the Acoustical Society of America
keyword
keyword
50412
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"