The Influence of the Onset of Phonation on the Frequency of Stuttering

1971 ◽  
Vol 14 (3) ◽  
pp. 639-644 ◽  
Author(s):  
Martin R. Adams ◽  
Ronald Reis
Keyword(s):  
Statistical Analyses ◽  
The Other ◽  
Speech Sounds ◽  
Rapid Adaptation ◽  
Speech Segment ◽  
Voiced Speech

To test the hypothesis that the frequency with which vocalization must be initiated in a given speech segment and the frequency of attendant disfluency are positively related, two passages were constructed. One passage was composed entirely of voiced speech sounds (all-voiced passage). The other contained both voiceless and voiced sounds (combined passage). Thus, in reading the later material, subjects had to effect more “off-on” phonatory adjustments than in the all-voiced selection. Aside from this difference, the passages were closely matched along several other linguistic and phonetic parameters. Fourteen stutterers performed five massed oral readings of each passage. Statistical analyses all showed that there was significantly less stuttering and more rapid adaptation associated with the all-voiced material.

scholarly journals Comparison of Two Methods of Producing Adaptation of Saccade Size and Implications for the Site of Plasticity

1998 ◽  
Vol 79 (2) ◽  
pp. 704-715 ◽  
Author(s):  
Charles A. Scudder ◽  
Ekatherina Y. Batourina ◽  
George S. Tunder
Keyword(s):  
Relative Size ◽  
Neural Mechanisms ◽  
The Other ◽  
Rapid Adaptation ◽  
Adaptive Mechanisms ◽  
Saccade Size ◽  
Orbital Position ◽  
One Step ◽  
Induced Changes ◽  
Visual Error

Scudder, Charles A., Ekatherina Y. Batourina, and George S. Tunder. Comparison of two methods of producing adaptation of saccade size and implications for the site of plasticity. J. Neurophysiol. 79: 704–715, 1998. Saccade accuracy is known to be maintained by adaptive mechanisms that progressively reduce any visual error that consistently exists at the end of saccades. Experimentally, the visual error is induced using one of two paradigms. In the first, the horizontal and medial recti of trained monkeys are tenectomized and allowed to reattach so that both muscles are paretic. After patching the unoperated eye and forcing the monkey to use the “paretic eye,” saccades initially undershoot the intended target, but gradually increase in size until they almost acquire the target in one step. In the second, the target of a saccade is displaced in midsaccade so that the saccade cannot land on target. Again saccade size adapts until the target can be acquired in one step. Because adaptation with the latter paradigm is very rapid but adaptation using the former is slow, it has frequently been questioned whether or not the two forms of adaptation depend on the same neural mechanisms. We show that the rate of adaptation in both paradigms depends on the number of possible visual targets, so that when this variable is equated, adaptation occurs at similar rates in both paradigms. To demonstrate further similarities between the result of the two paradigms, an experiment using intrasaccadic displacements was conducted to show that rapid adaptation possesses the capacity to produce gain changes that vary with orbital position. The relative size of intrasaccadic displacements were graded with orbital position so as to mimic the position-dependent dysmetria initially produced by a single paretic extraocular muscle. Induced changes in saccade size paralleled the size of the displacements, being largest for saccades into one hemifield and being negligible for saccades into the other hemifield or in the opposite direction. Collectively, the data remove the rational for asserting that adaptation produced by the two paradigms depends on separate neural mechanisms. We argue that adaptation produced by both paradigms depends on the cerebellum.

Identification of two species of alpha motoneurons in cat's plantaris pool

1977 ◽  
Vol 40 (1) ◽  
pp. 16-25 ◽  
Author(s):  
D. A. Harris ◽  
E. Henneman
Keyword(s):  
Visual Inspection ◽  
Repetitive Stimulation ◽  
Ventral Root ◽  
Statistical Analyses ◽  
The Other ◽  
Small Samples ◽  
The Relationship ◽  
Decerebrate Cats ◽  
Two Populations ◽  
Stimulation Of

1. Single units of the plantaris pool were isolated in ventral root filaments of decerebrate cats and their critical firing levels (CFLs) were determined. Motoneurons of similar size, as judged by their CFLs and other criteria, were compared in firing rate (FR) during repetitive stimulation of the plantaris nerve. 2. Such units either differed very little or quite widely, suggesting that they were sampled randomly from two populations, one firing rapidly, the other slowly. The relationship between the two rates remained approximately constant, regardless of the intensity or rate of input the units received, as long as both of them discharged rhythmically. 3. In single experiments 10-15 of the smallest units in the pool (all with CFLs in the 0-8% range) were isolated and compared. Statistical analyses and visual inspection of these small samples again suggested the existence of two species of motoneurons. 4. Statistical analyses also indicated that the FRs of units in single experiments were not sampled from any one of a variety of parametric, single-modal distributions. This suggests that the data were sampled from a distribution having more than one mode, indicating the existence of separate populations or species of motoneurons among the small units of the pool (0-8% range of CFL). 5. Pooling of the normalized data from different experiments revealed a bimodal histogram, reinforcing the conclusion that there are two species of small alpha motoneurons in the plantaris pool.

Karyotypic Studies in Artificial Hybrids of Solanum Sections Anarrhichomenum and Basarthrum (Solanaceae)

1999 ◽  
Vol 47 (1) ◽  
pp. 147 ◽  
Author(s):  
Laura Stiefkens ◽  
Gabriel Bernardello ◽  
Gregory J. Anderson
Keyword(s):  
Wild Species ◽  
Parental Species ◽  
Statistical Analyses ◽  
The Other ◽  
Genome Length ◽  
Mitotic Chromosomes ◽  
Chromosome Change ◽  
Centromere Position ◽  
Taxonomic Methods

Mitotic chromosomes of seven artificial hybrids fromSolanum L. sect.AnarrichomenumBitter &Basarthrum (Bitter) Bitter were studied(S. caripense Humb. & Bonpl. ex Dunal ×S. basendopogon Bitter,S. caripense × S. muricatumAiton, S. muricatum ×S. basendopogon, S. muricatum× S. caripense,S. muricatum× S. cochoae G.J. Anderson & Bernardello, S. sodiroi Bitter ×S. brevifolium Humb. & Bonpl., andS. sodiroi ×S. caripense).All are wild species except S. muricatum, which is knownonly as a domesticate (‘pepino dulce’). All hybrids were diploidwith 2n = 24. We compare the karyotypes ofparental species and their hybrids to understand chromosome change as acomponent of the evolution of these sections. Statistical analyses ofchromosomes, genome length and centromere position yielded estimates ofkaryotype composition and asymmetry. Comparisons were made by means of ANOVAsand numerical taxonomic methods. Statistical comparisons among the hybridspooled showed much karyotypic similarity among them. Karyotypes of theparental species revealed sharper differences among them. The karyotypes ofthe hybrids except for one combination were not intermediate. In general, thekaryotypes of the hybrids showed relatedness to the karyotype of one parentalspecies. The hybrids involving S. muricatum havechromosomal features closer to it than to the other parental species. Previousstudies showed S. caripense among the wild species to bemost similar to S. muricatum and, as expected, therewere the fewest differences between these species and the hybrids betweenthem. The karyotype of S. sodiroi×S. brevifolium is the most different from the karyotypeof either of its parental species.

scholarly journals Central Tokyo’s Low Response Rate to the 2015 Population Census and Its Related Factors

SAGE Open ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 215824402096308
Author(s):  
Tomoya Hanibuchi ◽  
Masakazu Yamauchi
Keyword(s):  
Online Survey ◽  
Response Rate ◽  
Statistical Analyses ◽  
The Other ◽  
Population Census ◽  
Single Family ◽  
Data Reliability ◽  
Middle Aged ◽  
Related Factors ◽  
Nationwide Study

Recently, there has been an increase in the number of “unreported” cases in the Population Census of Japan caused by nonresponses to the survey. Subsequently, this has led to data reliability challenges. In light of this problem, the factors related to the low response rate of the 2015 Population Census in the central Tokyo area are examined in the present study. An online survey was conducted among individuals residing in the three Special Wards of Tokyo to inquire about their responses (submitted or not submitted) to the previous census. The statistical analyses demonstrated that particularly in central Tokyo, middle-aged (35–49 years) people and those who did not own a single-family residence were more likely to be nonrespondents, while most of the other characteristics were similar to the results reported in a previous nationwide study. However, further studies are required to fully understand the high rates of unreported cases in central Tokyo.

Progenèse et Gémellité

1952 ◽  
Vol 1 (2) ◽  
pp. 159-169 ◽  
Author(s):  
R. Turpin ◽  
M. P. Schützenberger
Keyword(s):  
Statistical Analyses ◽  
The Other ◽  
Congenital Defects ◽  
Maternal Factors ◽  
Other Hand ◽  
Hereditary Factors

SummaryUnder the name of “Progenesis” (from the prefix “pro “, in front, and of the Greek “genesis “, generation) a new conception and classification of the factors of development were proposed by R. Turpin, the progenesis grouping “the whole of the hereditary and non hereditary factors that preexist to the fecundation and that concur to the formation of the being and to its development”.This conception has the advantage of designating indifferently, to all progenitic factor, hereditary as well as non hereditary, a place marked in advance; it has the advantage of showing beside the paternal maternal factors, the characteristic progenetical factors of the couple; it has the advantage to draw the attention on factors which were before neglected (age of mother, age of father, rank of birth, sex of the preceding pregnancy, interval between pregnancies, number of pregnancies, etc.) and whose importance increases in proportion as the gathering of the facts is abundant enough to lend itself to the statistical analyses; it has lastly the advantage of leading to an etiological prevention of the congenital defects, trying to draw the most advantage from the surrounding factors, without discarding, when they are imposed by the circumstances, the possibilities brought to their right proportion of the eugenic selection.To illustrate this progenesic conception of the ontogenesis a simple example, the gemellity, deserves to be retained.If we consider the gemellity as a deviation in regard to the simple pregnancies, it constitutes at the same time the more frequent and the best registered of anomalies. It lends itself to the study of its relations with divers progenesic factors which the authors regard by turns with the complement of their personal researches : age of the progenitors, rank of the pregnancy, sex of the product of the anterior last conception.If on the other hand, we consider the gemellity itself as a progenesic factor, we can study on the development, and for instance, which the authors have done, on the rate of masculinity. This study has lead them to put in value the phenomenon of diminution of the masculinity in relation to the degree of the multiplicity of pregnancy.

Taxonomic status of the genus Spermophilus (Mammalia: Rodentia) in Turkey and Iran with description of a new species

Zootaxa ◽  
2007 ◽  
Vol 1529 (1) ◽  
pp. 1-15 ◽  
Author(s):  
ŞAKIR ÖNDER ÖZKURT ◽  
MUSTAFA SÖZEN ◽  
NURI YIĞIT ◽  
IRFAN KANDEMIR ◽  
REYHAN ÇOLAK ◽  
...  
Keyword(s):  
New Species ◽  
Taxonomic Status ◽  
Statistical Analyses ◽  
The Other ◽  
Diagnostic Characters ◽  
Taurus Mountains ◽  
Spermophilus Citellus ◽  
Morphologic Data ◽  
First Time ◽  
A New Species

We report a new species of Spermophilus ( Rodentia: Sciuridae), here designated as S. torosensis sp. nov., distributed in the Taurus Mountains in southern Anatolia, Turkey. A total of 161 specimens of the genus Spermophilus from Turkey and Iran were analyzed for their morphological, morphometric, and karyological characteristics. Uni- and multi-variate statistical analyses of morphologic data for 95 adult specimens yielded 4 distinct groups. Taxonomic evaluations classified the specimens into 4 species Spermophilus citellus, S. xanthopymnus, S. fulvus and S. torosensis sp. nov. Morphometrics, coat coloration, a brush-shaped tail, and a NFa value of 72 are diagnostic characters that distinguish S. torosensis sp. nov. from the other species. In Turkey, S. torosensis sp. nov. was found in 6 locations. The karyotype of S. fulvus also is described for the first time as 2n= 36, NFa= 70 and NFa= 66; new karyotypic data is reported for S. xanthoprymnus from Iran and Turkey.

Immunofluorescence of Aeromonas hydrophila as measured by fluorescence photometric microscopy

1980 ◽  
Vol 26 (2) ◽  
pp. 161-168 ◽  
Author(s):  
C. B. Fliermans ◽  
T. C. Hazen
Keyword(s):  
Fluorescence Microscopy ◽  
Aeromonas Hydrophila ◽  
Statistical Analyses ◽  
The Other ◽  
Aquatic Habitats

Strain-specific fluorescent antibodies were prepared for three isolates of Aeromonas hydrophila. These antisera were reacted with 255 other A. hydrophila isolates, and their immunofluorescence was measured quantitatively by photometric fluorescence microscopy. Only 27.5% of the isolates reacted with the prepared antisera which indicated that other undetected serogroups are present. Statistical analyses indicated that the A. hydrophila isolated from aquatic habitats were distinct from the other isolates as measured by immunofluorescence.

Fracture Toughness in the Transition Temperature Region

2018 ◽  
Vol 1146 ◽  
pp. 92-97
Author(s):  
Emina Džindo ◽  
Zoran Radaković ◽  
Blagoj Petrovski ◽  
Srdjan Tadić ◽  
Sanja Petronić ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Transition Temperature ◽  
Temperature Region ◽  
Upper Bound ◽  
Low Temperatures ◽  
Fracture Behaviour ◽  
Base Material ◽  
Statistical Analyses ◽  
The Other ◽  
Fracture Assessment

The steels fracture toughness was measured at two different temperature T= - 60°C and T = -90°C, at v=0.02 mm/min and v=0.5mm/min. The following steels: CrMoV, 20MnMoNi55, A533B and A508 were tested with three different sizes of CT specimens 50 and 100 and 200. Those steels are weldable, although the authors investigated the fracture behaviour of base material. In order to satisfy statistical analyses, a large number of specimens were tested. Fracture behaviour has turned out to be typical, S-shaped curve for transitional fracture at low temperatures. Apart from the other variables, specimen’s width significantly affects measured toughness. Smaller specimens, CT50, might be considered of upper bound reliability while the CT200 specimens were shown to be the most conservative. In this way it has been shown that wider specimens are more reliable in a fracture assessment of the examined steels. In this paper, the fracture probabilities of specimens in function of fracture toughness were determined as well, and it could be concluded that the widest specimens are the most likely to be broken for the same values of the fracture toughness.

scholarly journals The Comparative Effect of Student Team-Achievement Division and Cooperative Integrated Reading and Composition on EFL Learners’ Speaking Complexity

2018 ◽  
Vol 7 (3) ◽  
pp. 67 ◽  
Author(s):  
Zeinab Ghasemi ◽  
Abdollah Baradaran
Keyword(s):  
Significant Influence ◽  
Statistical Analyses ◽  
The Other ◽  
Comparative Effect ◽  
Efl Learners ◽  
Efl Context ◽  
Post Test ◽  
Cooperative Methods ◽  
Student Team ◽  
Experimental Group

The effectiveness of complexity acquisition to enhance intermediate learners’ speaking complexity, is particularly the focus of the present study. The participants of the present study, were 60 female EFL learners, who were selected from a larger population of 90 EFL learners based on their performane on a sample piloted PET test in Zabansara Language Institution. The total of 60 participants were divided into two experimental groups of 30. The experimental group of STAD (Student Team-Achievement Division), and the experimental group of CIRC (Cooperative Integrated Reading and Composition), which were both regarded as cooperative methods. The 10-session treatment, included focusing on complexities using STAD cooperative method instruction in one experimental group, and CIRC in the other. A post-test was administered to both groups at the end of the treatment,after applying the mentioned cooperative methods. The statistical analyses were conducted, and the gained results of the study indicated that CIRC had a significant influence on learners’ complexity learning. It concluded the importance of applying appropriate complexities in EFL context to developing speech naturalness.

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