keyword
MENU ▼
Read by QxMD icon Read
search

temporal discrimination

keyword
https://www.readbyqxmd.com/read/28922067/conceptual-elaboration-versus-direct-lexical-access-in-wais-similarities-differential-effects-of-white-matter-lesions-and-gray-matter-volumes
#1
Sven-Erik Fernaeus, Åke Hellström
Wechsler Adult Intelligence Scale (WAIS) subscale Similarities have been classified as a test of either verbal comprehension or of inductive reasoning. The reason may be that items divide into two categories. We tested the hypothesis of heterogeneity of items in WAIS-Similarities. Consecutive patients at a memory clinic and healthy controls participated in the study. White-matter hyperintensities (WMHs) and normalized temporal lobe volumes were measured based on Magnetic resonance Imaging (MRI), and tests of verbal memory and attention were used in addition to WAIS-Similarities to collect behavioural data...
September 18, 2017: Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition
https://www.readbyqxmd.com/read/28917014/more-insight-into-the-interplay-of-response-selection-and-visual-attention-in-dual-tasks-masked-visual-search-and-response-selection-are-performed-in-parallel
#2
Christina B Reimer, Torsten Schubert
Both response selection and visual attention are limited in capacity. According to the central bottleneck model, the response selection processes of two tasks in a dual-task situation are performed sequentially. In conjunction search, visual attention is required to select the items and to bind their features (e.g., color and form), which results in a serial search process. Search time increases as items are added to the search display (i.e., set size effect). When the search display is masked, visual attention deployment is restricted to a brief period of time and target detection decreases as a function of set size...
September 15, 2017: Psychological Research
https://www.readbyqxmd.com/read/28916762/time-resolved-analysis-of-dna-protein-interactions-in-living-cells-by-uv-laser-pulses
#3
Angela Nebbioso, Rosaria Benedetti, Mariarosaria Conte, Vincenzo Carafa, Floriana De Bellis, Jani Shaik, Filomena Matarese, Bartolomeo Della Ventura, Felice Gesuele, Raffaele Velotta, Joost H A Martens, Hendrik G Stunnenberg, Carlo Altucci, Lucia Altucci
Interactions between DNA and proteins are mainly studied through chemical procedures involving bi-functional reagents, mostly formaldehyde. Chromatin immunoprecipitation is used to identify the binding between transcription factors (TFs) and chromatin, and to evaluate the occurrence and impact of histone/DNA modifications. The current bottleneck in probing DNA-protein interactions using these approaches is caused by the fact that chemical crosslinkers do not discriminate direct and indirect bindings or short-lived chromatin occupancy...
September 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28916178/the-cerebellum-s-contribution-to-beat-interval-discrimination
#4
S Paquette, S Fujii, H C Li, G Schlaug
From expert percussionists to individuals who cannot dance, there are widespread differences in people's abilities to perceive and synchronize with a musical beat. The aim of our study was to identify candidate brain regions that might be associated with these abilities. For this purpose, we used Voxel-Based-Morphometry to correlate inter-individual differences in performance on the Harvard Beat Assessment Tests (H-BAT) with local inter-individual variations in gray matter volumes across the entire brain space in 60 individuals...
September 12, 2017: NeuroImage
https://www.readbyqxmd.com/read/28914387/joint-stimulus-control-in-a-temporal-discrimination-task
#5
Carlos Pinto, Inês Fortes, Armando Machado
The ability to identify stimuli that signal important events is fundamental for an organism to adapt to its environment. In the present paper, we investigated how more than one stimulus could be used jointly to learn a temporal discrimination task. Ten pigeons were exposed to a symbolic matching-to-sample procedure with three durations as samples (2, 6, and 18 s of keylight) and two colors as comparisons (red and green hues). A 30-s intertrial interval (ITI), illuminated with a houselight, separated the trials...
September 15, 2017: Animal Cognition
https://www.readbyqxmd.com/read/28912155/visual-motion-discrimination-by-propagating-patterns-in-primate-cerebral-cortex
#6
Rory Townsend, Selina S Solomon, Paul R Martin, Samuel G Solomon, Pulin Gong
Visual stimuli can evoke waves of neural activity that propagate across the surface of visual cortical areas. The relevance of these waves for visual processing is unknown. Here we measured the phase and amplitude of local field potentials (LFPs) in electrode array recordings from motion-processing medial temporal area (MT) of anesthetized male marmosets. Animals viewed grating or dot-field stimuli drifting in different directions. We found that on individual trials, the direction of LFP wave propagation is sensitive to the direction of stimulus motion...
September 14, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28899716/from-birth-to-death-a-role-for-reactive-oxygen-species-in-neuronal-development
#7
REVIEW
Carlos Wilson, Ernesto Muñoz-Palma, Christian González-Billault
Historically, ROS have been considered toxic molecules, especially when their intracellular concentration reaches high values. However, physiological levels of ROS support crucial cellular processes, acting as second messengers able to regulate intrinsic signaling pathways. Specifically, both the central and peripheral nervous systems are especially susceptible to changes in the redox state, developing either a defense or adaptive response depending on the concentration, source and duration of the pro-oxidative stimuli...
September 9, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28893930/how-human-amygdala-and-bed-nucleus-of-the-stria-terminalis-may-drive-distinct-defensive-responses
#8
Floris Klumpers, Marijn C W Kroes, Johanna Baas, Guillén Fernández
The ability to adaptively regulate responses to the proximity of potential danger is critical to survival and imbalance in this system may contribute to psychopathology. The bed nucleus of the stria terminalis (BNST) is implicated in defensive responding during uncertain threat anticipation whereas the amygdala may drive responding upon more acute danger. This functional dissociation between the BNST and amygdala is however controversial, and human evidence scarce. Here we utilized data from two independent functional magnetic resonance imaging studies (N=108 males & N=70 (45 females)) to probe how coordination between the BNST and amygdala may regulate responses during shock anticipation and actual shock confrontation...
September 11, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28888646/disparity-in-the-nasopharyngeal-microbiota-between-healthy-cattle-on-feed-at-entry-processing-and-with-respiratory-disease
#9
Mohamed Zeineldin, James Lowe, Maria de Godoy, Nidia Maradiaga, Chelsey Ramirez, Mohamed Ghanem, Yassein Abd El-Raof, Brian Aldridge
Bovine respiratory disease (BRD) is one of the most serious causes of health and economic problems in the beef production industry, especially in recently weaned, intensely raised and newly transported feedlot cattle. While the importance of upper airway structure and function in the susceptibility of the lower respiratory tract to colonization with potential pathogens is well established, the role of the mucosal microbiota in respirtatory health is less well defined. The objective of this study was to characterize the nasopharyngeal microbiota of feedlot cattle at entry into a commercial feedlot, during initial management processing, and to compare the dynamics of change in these microbial communities between clinically healthy calves and those that develop BRD within the first month after entry...
September 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28887176/ecoacoustic-codes-and-ecological-complexity
#10
Almo Farina
Multi-layer communication and sensing network assures the exchange of relevant information between animals and their umwelten, imparting complexity to the ecological systems. Individual soniferous species, the acoustic community, and soundscape are the three main operational levels that comprise this multi-layer network. Acoustic adaptation and acoustic niche are two more important mechanisms that regulate the acoustic performances at the first level while the acoustic community model explains the complexity of the interspecific acoustic network at the second level...
September 5, 2017: Bio Systems
https://www.readbyqxmd.com/read/28886035/temporal-causal-inference-with-stochastic-audiovisual-sequences
#11
Shannon M Locke, Michael S Landy
Integration of sensory information across multiple senses is most likely to occur when signals are spatiotemporally coupled. Yet, recent research on audiovisual rate discrimination indicates that random sequences of light flashes and auditory clicks are integrated optimally regardless of temporal correlation. This may be due to 1) temporal averaging rendering temporal cues less effective; 2) difficulty extracting causal-inference cues from rapidly presented stimuli; or 3) task demands prompting integration without concern for the spatiotemporal relationship between the signals...
2017: PloS One
https://www.readbyqxmd.com/read/28882707/functional-connectivity-of-large-scale-brain-networks-in-patients-with-anti-nmda-receptor-encephalitis-an-observational-study
#12
Michael Peer, Harald Prüss, Inbal Ben-Dayan, Friedemann Paul, Shahar Arzy, Carsten Finke
BACKGROUND: In anti-NMDA receptor (NMDAR) encephalitis, antibody-mediated dysfunction of NMDARs causes severe neuropsychiatric symptoms, including psychosis, memory deficits, and movement disorders. However, it remains elusive how antibody-mediated NMDAR dysfunction leads to these symptoms, and whether the symptoms arise from impairment in specific brain regions and the interactions between impaired regions. METHODS: In this observational study, we recruited 43 patients with anti-NMDAR encephalitis from a tertiary university hospital and 43 age-matched and sex-matched healthy controls without a history of neurological or psychiatric disorders, who were recruited from the general population of Berlin...
September 4, 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28882629/intracranial-markers-of-conscious-face-perception-in-humans
#13
Fabiano Baroni, Jochem van Kempen, Hiroto Kawasaki, Christopher K Kovach, Hiroyuki Oya, Matthew A Howard, Ralph Adolphs, Naotsugu Tsuchiya
Investigations of the neural basis of consciousness have greatly benefited from protocols that involve the presentation of stimuli at perceptual threshold, enabling the assessment of the patterns of brain activity that correlate with conscious perception, independently of any changes in sensory input. However, the comparison between perceived and unperceived trials would be expected to reveal not only the core neural substrate of a particular conscious perception, but also aspects of brain activity that facilitate, hinder or tend to follow conscious perception...
September 4, 2017: NeuroImage
https://www.readbyqxmd.com/read/28882612/proposed-panel-of-diagnostic-tools-for-accurate-temporal-classification-of-symptomatic-t-gondii-infection
#14
Geisa Baptista Barros, Elenice Moreira Lemos, Priscila Pinto E Silva-Dos-Santos, Reynaldo Dietze, Eliana Zandonade, José Roberto Mineo, Deise Aparecida de Oliveira Silva, Ana Cláudia Marquez Pajuaba, Matheus de Souza Gomes, Laurence Rodrigues do Amaral, Jordana Grazziela Coelho-Dos-Reis, Olindo Assis Martins-Filho, José Carlos Serufo
Serological tests available for the diagnosis of acute Toxoplasma gondii infection have limitations in establishing the temporal diagnosis of acute toxoplasmosis. The present analytical-descriptive investigation comprises of a prospective longitudinal cohort study to search for accurate biomarkers to distinguish acute, early and late convalescent T. gondii infection. Classic methods (immunofluorescence-IFA along with Enzyme-linked immunosorbent-ELISA and fluorescent-ELFA assays) for IgM, IgA, IgG and IgG avidity were employed in parallel with flow cytometry-based anti-fixed T...
September 4, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28878058/a-vertebrate-retina-with-segregated-colour-and-polarization-sensitivity
#15
Iñigo Novales Flamarique
Besides colour and intensity, some invertebrates are able to independently detect the polarization of light. Among vertebrates, such separation of visual modalities has only been hypothesized for some species of anchovies whose cone photoreceptors have unusual ultrastructure that varies with retinal location. Here, I tested this hypothesis by performing physiological experiments of colour and polarization discrimination using the northern anchovy, Engraulis mordax Optic nerve recordings showed that the ventro-temporal (VT), but not the ventro-nasal (VN), retina was polarization sensitive, and this coincided with the exclusive presence of polarization-sensitive photoreceptors in the VT retina...
September 13, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28869474/cortical-metabolic-and-cognitive-correlates-of-disorientation-in-alzheimer-s-disease
#16
Gali H Weissberger, Rebecca J Melrose, Candace M Fanale, Joseph V Veliz, David L Sultzer
Orientation to time, date, and place is commonly utilized in clinical settings to aid in diagnosis, staging, and monitoring of Alzheimer's disease (AD). This study aimed to identify the cerebral metabolic correlates of orientation in patients with AD, and the degree to which regions associated with orientation overlap with memory-related structures. Eighty-five patients with a diagnosis of probable AD underwent fluorodeoxyglucose positron emission tomography (FDG-PET) and neuropsychological testing. Orientation items from the Dementia Rating Scale and recognition performance from the Consortium to Establish a Registry for AD (CERAD) Word List Learning test were correlated with cerebral glucose metabolism...
September 1, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28865975/membrane-nanodomains-and-microdomains-in-plant-microbe-interactions
#17
REVIEW
Thomas Ott
During plant-microbe interactions, host cells need to keep stringent control over the approaching pathogens and symbionts. This requires specific spatio-temporal assemblies of pattern recognition receptors and other complex constituents and a strict physical separation of genetically overlapping pathways. Increasing evidence suggests that this is, at least partially, achieved by the formation of nanometer scale membrane platforms that might act as signaling hubs. These and other larger-scale sub-compartments have been termed 'membrane rafts', 'nanodomains' and 'microdomains'...
August 31, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28865793/tracing-the-sources-of-lead-pb-in-brunei-bay-borneo-by-using-integrated-spectrometry-icp-ms-and-chemometric-techniques
#18
Ghazali Adiana, Hafizan Juahir, Bidai Joseph, Noor Azhar Mohamed Shazili
The present study aims to define the possible sources that contribute to the level of Pb into the Brunei Bay, Borneo. The cluster analysis has classified the bay into the northern part with heavy and agriculture-related industries; the southern area with a moderate rural human settlement as well as the southwestern area with a more pristine environment and a low level of human settlement. The score plot of spatial discriminant analysis verified a significant influence of the river system toward the estuary, whereas the temporal discriminant analysis has discriminated the seasonal changes...
August 30, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28865452/the-development-and-validation-of-measures-to-assess-cooking-skills-and-food-skills
#19
Fiona Lavelle, Laura McGowan, Lynsey Hollywood, Dawn Surgenor, Amanda McCloat, Elaine Mooney, Martin Caraher, Monique Raats, Moira Dean
BACKGROUND: With the increase use of convenience food and eating outside the home environment being linked to the obesity epidemic, the need to assess and monitor individuals cooking and food skills is key to help intervene where necessary to promote the usage of these skills. Therefore, this research aimed to develop and validate a measure for cooking skills and one for food skills, that are clearly described, relatable, user-friendly, suitable for different types of studies, and applicable across all sociodemographic levels...
September 2, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28864916/effects-of-transcranial-direct-current-stimulation-on-the-auditory-mismatch-negativity-response-and-working-memory-performance-in-schizophrenia-a-pilot-study
#20
Danielle Impey, Ashley Baddeley, Renee Nelson, Alain Labelle, Verner Knott
Cognitive impairment has been proposed to be the core feature of schizophrenia (Sz). Transcranial direct current stimulation (tDCS) is a non-invasive form of brain stimulation which can improve cognitive function in healthy participants and in psychiatric patients with cognitive deficits. tDCS has been shown to improve cognition and hallucination symptoms in Sz, a disorder also associated with marked sensory processing deficits. Recent findings in healthy controls demonstrate that anodal tDCS increases auditory deviance detection, as measured by the brain-based event-related potential, mismatch negativity (MMN), which is a putative biomarker of Sz that has been proposed as a target for treatment of Sz cognition...
September 1, 2017: Journal of Neural Transmission
keyword
keyword
116315
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"