scholarly journals Processing differences between prepositions and nouns

Psihologija ◽  
2003 ◽  
Vol 36 (3) ◽  
pp. 379-394
Author(s):  
Vesna Radojcic ◽  
Aleksandar Kostic
Keyword(s):  
Linear Regression ◽  
Lexical Decision ◽  
Single Unit ◽  
Significant Proportion ◽  
Amount Of Information ◽  
Equivalent Length ◽  
Latency Variability ◽  
Per Se ◽  
Citation Form ◽  
Processing Differences

Processing differences between Serbian prepositions and nouns were investigated in two lexical decision experiments. The outcome of the experiments indicate that processing of nouns presented in their citation form is affected primarily by the amount of information (bits) derived from noun's probability. Processing of prepositions appeared to be more complex because, in addition to probability of preposition, processing latency is also affected by number of syntactic functions/meanings carried by a given preposition and number of congruent noun cases. None of these factors per se is correlated with processing latencies. However, when combined into a single unit (expressed in bits) significant proportion of processing latency variability has been accounted for. It was shown that prepositions are processed faster than nouns of equivalent frequency and equivalent length. We conclude this on the basis of the observed differences in slope from linear regression, but also on the basis of differences in averaged RTs for the two word types.

scholarly journals Processing of verb tense

Psihologija ◽  
2002 ◽  
Vol 35 (3-4) ◽  
pp. 299-316 ◽  
Author(s):  
Aleksandar Kostic ◽  
Jelena Havelka
Keyword(s):  
Lexical Decision ◽  
Cognitive System ◽  
Personal Pronoun ◽  
Future Tense ◽  
Amount Of Information ◽  
Verb Forms ◽  
Average Probability ◽  
Per Se ◽  
Verb Tense

Processing of Serbian inflected verbs was investigated in two lexical decision experiments. In the first experiment subjects were presented with five forms of future tense, while in the second experiment the same verbs were presented in three forms of present and future tense. The outcome of the first experiment indicates that processing of inflected verb is determined by the amount of information derived from the average probability per congruent personal pronoun of a particular verb form. This implies that the cognitive system is not sensitive to verb person per se, nor to the gender of congruent personal pronoun. Results of the second experiment show that for verb forms of different tenses, presented in the same experiment, the amount of information has to be additionally modulated by tense probability. Such an outcome speaks in favor of cognitive relevance of verb tense.

Abstract 3851: Temporal Distribution of Stroke Volumes and Clinical-Diffusion Mismatch in Patients with Proximal Arterial Occlusions

Stroke ◽  
2012 ◽  
Vol 43 (suppl_1) ◽  
Author(s):  
Raul G Nogueira ◽  
David S Liebeskind ◽  
Leticia M Souza ◽  
Qing Hao ◽  
Karen Furie ◽  
...  
Keyword(s):  
Linear Regression ◽  
Infarct Volume ◽  
Linear Regression Analysis ◽  
Significant Proportion ◽  
Arterial Occlusion ◽  
Reperfusion Therapy ◽  
Poor Correlation ◽  
Lesion Volume ◽  
Collateral Flow ◽  
Over Time

Background and Purpose: Previous studies have demonstrated that the benefit of reperfusion therapy declines over time. The Clinical-Diffusion Mismatch (CDM) model has been suggested as surrogate for salvable tissue in acute ischemic stroke (AIS) patients. We sought to describe the temporal behavior profile of infarct volumes and CDM in patients suffering AIS due to proximal arterial occlusion (PAO). Methods: We performed a retrospective analysis of consecutive AIS patients admitted to two large academic institutions fulfilling the following criteria: (1) Baseline NIHSS ≥8; (2) PAO defined as MCA-M1, intracranial ICA, or tandem cervical + ICA/MCA-M1 occlusion on admission CTA/MRA; and (3) MRI-DWI performed ≤8 hours from time of stroke onset/last seen well (TSO). CDM was defined as baseline NIHSS ≥8 and DWI volume ≤25cc (as proposed by Davalos et al). Linear regression analysis was performed to define the changes on DWI lesion volume on presentation over time. The observed TSO to MRI were broken down into quartiles to look for any differences in the distribution of the baseline variables over time. Results: A total of 132 consecutive patients were identified (mean age, 66±16.8 years; 57% females; mean baseline NIHSS 17.5±5.3; occlusion site: MCA-M1, 64%; intracranial-ICA, 29%; tandem, 5%, mean TSO to DWI, 269.5±105.48 minutes). The mean DWI stroke volume on presentation was 46.7±54.8 cc (range, 0.19-436.1) and 63 (46.7%) patients had CDM. There was no significant changes in age, gender, baseline NIHSS, or occlusion site amongst the different time quartiles. Median infarct volume (cc) increased (quartile #1=8.5; #2=30.1; #3=38.5; #4=29.4) and the chances of having a CDM decreased (p<0.0001) across the different time quartiles. However, there was an overall poor correlation between DWI lesion volume on presentation and TSO to MRI (R-square=0.031, Figure ) and a significant proportion of the patients still had a CDM at later time epochs (#1=91.1%[20/22]; #2=47.8%[11/23]; #3=34.4%[21/61]; #4=42.3%[11/26]). Conclusions: Although infarct volume increases and the amount of penumbral tissue decreases over time, many patients with PAO will still have salvable penumbra at the later time epochs. This reflects individual differences in anatomic and physiological characteristics including the strength of collateral flow and highlights that selected patients may benefit from reperfusion therapy even at the later time windows. Figure : Relationship between Baseline DWI Volume (cc) and Time (minutes). Line is best fitted linear regression model.

Information Processing Differences in Active Versus Passive Person Perceivers

2011 ◽  
Vol 3 (2) ◽  
pp. 208-215
Author(s):  
Ashley S. Waggoner ◽  
Eliot R. Smith
Keyword(s):  
Information Processing ◽  
Reading Time ◽  
Positive Relationship ◽  
Amount Of Information ◽  
Processing Strategies ◽  
Time Patterns ◽  
Early Information ◽  
Processing Differences ◽  
Passive Person

Previous work has shown that compared to passive perceivers who view preselected information about target persons, active perceivers are less confident in their impressions, do not show increased confidence with increased amounts of information, and like targets less. The authors now explain these findings, postulating that perceivers without control over the amount of information they receive should be motivated to form impressions earlier, altering their information-processing strategies. Study 1 predicted and found that content-only active perceivers who control the content, but not the amount, of information show the same positive relationship between confidence and amount of information as passive perceivers, as well as the same reading-time patterns and level of liking. Study 2 used clearly valenced target stimuli and found support for the hypothesis that passive perceivers form more extreme early impressions, leading to greater liking when early information is positive but less liking when it is negative.

scholarly journals Cytotoxic Activity of Essential Oils of Aerial Parts and Ripe Fruits of Echinophora spinosa (Apiaceae)

2013 ◽  
Vol 8 (11) ◽  
pp. 1934578X1300801 ◽  
Author(s):  
Daniele Fraternale ◽  
Donata Ricci ◽  
Cinzia Calcabrini ◽  
Michele Guescini ◽  
Chiara Martinelli ◽  
...  
Keyword(s):  
Linear Regression ◽  
Essential Oils ◽  
Cytotoxic Activity ◽  
Central Italy ◽  
U937 Cells ◽  
Cytotoxic Effects ◽  
Regression Curves ◽  
Aerial Parts ◽  
Ic50 Values ◽  
Per Se

The cytotoxic effects of the essential oils obtained from the flowering aerial parts (APO) and ripe fruits (RFO) of Echinophora spinosa L. (Apiaceae) from central Italy toward human U937 promonocytoid cells were studied; the contribution of each of the major constituents to the whole cytotoxic activity of either APO or RFO was also characterized. The major components of APO were β-phellandrene (34.7%), myristicin (16.5%), p-cymene (16.3%), δ3-carene (12.6%), α-pinene (6.7%) and α-phellandrene (6.2%); those of RFO p-cymene (50.2%), myristicin (15.3%), α-pinene (15.1%) and α-phellandrene (8.1%). Both oils tested were toxic to U937 cells, but RFO was much more cytotoxic: indeed, the IC50 values calculated from the linear regression curves of RFO and APO were 14.5 ± 0.85 and 43.4 ± 2.81 μg/mL, respectively. α-Pinene and α-phellandrene were identified as the most toxically relevant constituents: however, they did not completely account for the toxic effects of genuine APO and RFO. Interestingly, we found that p-cymene, although per se devoid of toxicity within the tested range of concentrations, was capable of significantly sensitizing U937 cells to the cytotoxic activity of α-pinene and α-phellandrene, and that specific mixtures of these three terpenes were as toxic as genuine APO and RFO.

scholarly journals A selective role for ventromedial subthalamic nucleus in inhibitory control

eLife ◽  
2017 ◽  
Vol 6 ◽  
Author(s):  
Benjamin Pasquereau ◽  
Robert S Turner
Keyword(s):  
Subthalamic Nucleus ◽  
Inhibitory Control ◽  
Impulse Control ◽  
Single Unit ◽  
Single Unit Recording ◽  
Proactive Control ◽  
Reactive Control ◽  
Unit Recording ◽  
Per Se ◽  
Action Inhibition

The subthalamic nucleus (STN) is hypothesized to play a central role in the rapid stopping of movement in reaction to a stop signal. Single-unit recording evidence for such a role is sparse, however, and it remains uncertain how that role relates to the disparate functions described for anatomic subdivisions of the STN. Here we address that gap in knowledge using non-human primates and a task that distinguishes reactive and proactive action inhibition, switching and skeletomotor functions. We found that specific subsets of STN neurons have activity consistent with causal roles in reactive action stopping or switching. Importantly, these neurons were strictly segregated to a ventromedial region of STN. Neurons in other subdivisions encoded task dimensions such as movement per se and proactive control. We propose that the involvement of STN in reactive control is restricted to its ventromedial portion, further implicating this STN subdivision in impulse control disorders.

Postinspiratory activity of costal and crural diaphragm

1999 ◽  
Vol 87 (2) ◽  
pp. 582-589 ◽  
Author(s):  
P. A. Easton ◽  
M. Katagiri ◽  
T. M. Kieser ◽  
R. S. Platt
Keyword(s):  
Linear Regression ◽  
Regression Model ◽  
Linear Regression Model ◽  
Emg Activity ◽  
Expiratory Time ◽  
Equivalent Length ◽  
Centroid Frequency ◽  
Inspiratory Activity ◽  
Crural Diaphragm ◽  
Emg Electrodes

Because the first stage of expiration or “postinspiration” is an active neurorespiratory event, we expect some persistence of diaphragm electromyogram (EMG) after the cessation of inspiratory airflow, as postinspiratory inspiratory activity (PIIA). The costal and crural segments of the mammalian diaphragm have different mechanical and proprioceptive characteristics, so postinspiratory activity of these two portions may be different. In six canines, we implanted chronically EMG electrodes and sonomicrometer transducers and then sampled EMG activity and length of costal and crural diaphragm segments at 4 kHz, 10.2 days after implantation during wakeful, resting breathing. Costal and crural EMG were reviewed on-screen, and duration of PIIA was calculated for each breath. Crural PIIA was present in nearly every breath, with mean duration 16% of expiratory time, compared with costal PIIA with duration −2.6% of expiratory time ( P < 0.002). A linear regression model of crural centroid frequency vs. length, which was computed during the active shortening of inspiration, did not accurately predict crural EMG centroid frequency values at equivalent length during the controlled relaxation of postinspiration. This difference in activation of crural diaphragm in inspiration and postinspiration is consistent with a different pattern of motor unit recruitment during PIIA.

Looking for the Kennformen of the Italian verb paradigm. An experimental study

2020 ◽  
Vol 67 (2) ◽  
pp. 219-246
Author(s):  
Pier Marco Bertinetto ◽  
Chiara Finocchiaro ◽  
Clara Rastelli
Keyword(s):  
Experimental Study ◽  
Lexical Decision ◽  
Relative Weight ◽  
Specific Language ◽  
Interesting Insight ◽  
Frequent Form ◽  
Citation Form ◽  
Concomitant Factors ◽  
The Given ◽  
Insight Into

AbstractIt is generally assumed that, within an inflectional paradigm, some forms are cognitively more salient than others. Although this effect is the result of various concomitant factors to which all forms of the given paradigm concur, the existence of salient forms is crucial to assist the speaker in predicting the remaining forms of the paradigm. The notion of ‘salient form(s)’ was implicit in the so-called Kennform(en) proposed by Wolfgang Ullrich Wurzel as inflectional class marker(s). A possible candidate to salience is the so-called citation-form, i.e. the form by means of which lexemes are referred to in a dictionary, but this should be checked on a language-by-language basis. The present paper addresses the task of defining the most salient form(s) within the Italian verb paradigm. By means of three lexical decision experiments, the performance on the Infinitive (the citation-form) was compared with the performance on its most likely competitors, i.e. the Present Indicative 3SG, which is the most frequent form of most verbs, and the Present Indicative 1SG, which is selected as citation-form in some lexicographic traditions. The results indicate that the Infinitive and the Present Indicative 3SG prevail over the Present Indicative 1SG – as well as on various other forms used as controls and fillers in the experiments – but do not differ from each other. This offers an interesting insight into the organization of a complex verb paradigm, such as the Italian one. In particular, it shows that salience depends on the interaction of various morphological and psycholinguistic factors, whose relative weight is a function of the specific language considered.

scholarly journals It's a Bird, It's a Plane: Some Remarks on the Airbus Appellate Body Report (EC and Certain Member States – Large Civil Aircraft, WT/DS316/AB/R)

2013 ◽  
Vol 12 (2) ◽  
pp. 139-161 ◽  
Author(s):  
MICHAEL HAHN ◽  
KIRTIKUMAR MEHTA
Keyword(s):  
Full Range ◽  
Significant Proportion ◽  
Partial Privatization ◽  
Market Prices ◽  
Appellate Body ◽  
Export Subsidies ◽  
Civil Aircraft ◽  
Per Se ◽  
Private Investors ◽  
The Relationship

AbstractThe emergence of Airbus transformed the market structure of the LCA industry into a duopoly of similar-sized full-range manufacturers. The financing of Airbus's upfront investment expenditures came in a significant proportion from public funds, which violated, in the US's opinion the SCM Agreement. While the Appellate Body follows this view of things to a large extent, it does so in a measured way: the category of per se illegal export subsidies is interpreted with a view to the manipulation of normal market conditions; the distortion on competitive conditions matters, not the increase of exports as such. Other aspects of subsidies law clarified are the relationship between effect and subsidy. They are closely related but not identical; rightly, the report operates from the premise that the SCM Agreement's regime focuses on the effect, and not on the subsidy as such, which is a manifestation of a political choice by a sovereign Member state. The Appellate Body affirms that a subsidy has a ‘life’, a shorthand for a beginning and an end: it follows that the effect of a subsidy is not bound to be permanent but is bound to terminate. It is to be regretted that the Appellate Body avoided clarifying to what extent partial privatization, hence sale of assets at market prices to private investors, ‘extinguish’ subsidies.

scholarly journals The effect of polysemy on processing of Serbian nouns

Psihologija ◽  
2008 ◽  
Vol 41 (1) ◽  
pp. 69-86 ◽  
Author(s):  
Dusica Filipovic-Djurdjevic ◽  
Aleksandar Kostic
Keyword(s):  
Lexical Decision ◽  
Maximum Entropy ◽  
Word Processing ◽  
Cognitive System ◽  
Related Word ◽  
Derivational Morphology ◽  
Amount Of Information ◽  
Polysemous Words ◽  
Word Senses

It has been shown that while multiple unrelated meanings of a word (e.g. bank) increase processing latency, polysemy, that is multiple related word senses (e.g. paper) produce faster responses (Rodd, Gaskell & Marslen-Wilson, 2002; Klepousniotou, 2002). The goal of this study was to explore the effect of polysemy on word processing in Serbian. The outcomes of three lexical decision experiments have shown that polysemous words are processed faster. In addition, lemma frequency and number of related senses did not interact. Finally, a measure that combines lemma frequency and number of related senses into a single metric is proposed. This measure is information residual, initially applied on derivational morphology (Moscoso del Prado Mart?n, Kostic & Baayen, 2004). In this study the information residual is a difference between the amount of information (bit) derived from lemma frequency and the entropy of a polysemic cluster. Since relative frequencies of different word senses of a given word in Serbian are currently not available, maximum entropy (log N) was used as an approximation. The outcome of this study indicates that cognitive system is sensitive not only to the entropy of derivational clusters, but polysemic clusters as well.

scholarly journals The effect of family size on processing Serbian nouns

Psihologija ◽  
2007 ◽  
Vol 40 (1) ◽  
pp. 133-146
Author(s):  
Snezana Djeric ◽  
Aleksandar Kostic
Keyword(s):  
Lexical Decision ◽  
Multiple Regression ◽  
Word Frequency ◽  
Family Size ◽  
Word Length ◽  
Significant Proportion ◽  
Size Spectrum ◽  
Response Latencies ◽  
Explained Variance

In two lexical decision experiments the effect of family size was investigated for Serbian nouns. In the first experiment there were 15 nouns of low and 15 nouns of high family size, while in the second experiment 50 nouns that cover the whole range of family size spectrum were presented. In both experiments family size accounts for significant proportion of explained variance of response latencies. In multiple regression the effect of family size is significant over and above word frequency and word length, while frequency and word length do not account for significant proportion of variance over and above family size.

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