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Developmental Trajectory of Audiovisual Speech Integration in Early Infancy. A Review of Studies Using the McGurk Paradigm

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Tomalski P.

Psychology of Language and Communication

2015

vol. 19

issue 2

77-100

Apart from their remarkable phonological skills young infants prior to their first birthday show ability to match the mouth articulation they see with the speech sounds they hear. They are able to detect the audiovisual conflict of speech and to selectively attend to articulating mouth depending on audiovisual congruency. Early audiovisual speech processing is an important aspect of language development, related not only to phonological knowledge, but also to language production during subsequent years. Th is article reviews recent experimental work delineating the complex developmental trajectory of audiovisual mismatch detection. Th e central issue is the role of age-related changes in visual scanning of audiovisual speech and the corresponding changes in neural signatures of audiovisual speech processing in the second half of the first year of life. Th is phenomenon is discussed in the context of recent theories of perceptual development and existing data on the neural organisation of the infant ‘social brain’.

Sezonowa zmienność zasobów wód podziemnych o zwierciadle swobodnym w zlewni Pilicy

100%

Tomalski P.

Annales Universitatis Mariae Curie-Sklodowska, sectio B – Geographia, Geologia, Mineralogia et Petrographia

2015

vol. 70

issue 2

The paper attempts to identify seasonal variability of groundwater table in the Pilica catchment. Procedure created by Ch. G. Markham was used. It allows to compare results with analogical characteristics of other aquifers from central Poland. Sixteen piezometers were used for the research.They represent shallow aquifers located in the Pilica catchment and its surrounding and they are part of a measurement network of PIG-PIB (years from 2003 till 2014 were used). All of the aquifers with 10 years data series were chosen for the analyzed group. They represent the whole spectrum of occurrence of groundwaters in the Pilica catchment.Before the analysis homogeneity of time series was checked by two statistical tests: parametric F-Snedecor test (exams null hypothesis about variance equality) and non-parametric series test (exams null hypothesis about origin of two samples from the same general population). All of numeric strings were statistically homogeneous.Time series of mean monthly depth to groundwater table in all piezometers were changed into groundwater ordinates. In that way, maximum values are compared with the maximum level of groundwater table. Next, for all the aquifers the Markham characteristics of seasonal variability were calculated. First of them is seasonality index (IS) and it ranges from 0 to 100%. The second characteristic is time of concentration (WPK). During the interpretation of WPK values it is important to remember that this characteristic shows only time of concentration (it must not be associated with terms of maximum level of the examined phenomenon).Aquifers in the Pilica catchment are characterized by differential seasonality index raning from 1 to 30%. It means that rhythm of groundwater table changes is not seasonal in part of aquifers. Despite that, the seasonal variability of groundwater level is stronger in the Pilica catchment than in other aquifers in central Poland (IS is on average almost double). Time of concentration coefficients are differential too. They occur from February to July in the Pilica catchment, while in the whole central Poland they are concentrated in two terms (late winter and summer). Unlike other parts of central Poland, changes of groundwater resources are characterized by poor correlation with hydrogeological parameters of aquifers or mean depth to the groundwater level in piezometers in the Pilica catchment.

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1 Annales Universitatis Mariae Curie-Sklodowska, sectio B – Geographia, Geologia, Mineralogia et Petrographia

1 Psychology of Language and Communication

2 Tomalski P.

2 2015

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Developmental Trajectory of Audiovisual Speech Integration in Early Infancy. A Review of Studies Using the McGurk Paradigm

Sezonowa zmienność zasobów wód podziemnych o zwierciadle swobodnym w zlewni Pilicy