scholarly journals Lexical parafoveal previewing predicts reading speed

2020 ◽  
Author(s):  
Yali Pan ◽  
Steven Frisson ◽  
Ole Jensen
Keyword(s):  
Target Word ◽  
Reading Speed ◽  
Critical Role ◽  
Lexical Retrieval ◽  
Lexical Frequency ◽  
Neuronal Mechanisms ◽  
Competing Models ◽  
The Difference ◽  
Individual Reading ◽  
Target Words

AbstractWhile reading is an essential human skill, many of the neuronal mechanisms supporting reading are not well understood. In spite of the reduced visual acuity, parafoveal information plays a critical role in natural reading1; however, it is strongly debated whether words are previewed parafoveally at the lexical level2–9. This is a key dispute for competing models on reading and of great significance since lexical retrieval is important for guiding eye movements. We found evidence for parafoveal previewing at the lexical level by combining a novel rapid invisible frequency tagging (RIFT)10, 11 approach with magnetoencephalography (MEG) and eye-tracking. In a silent reading task, target words of either low or high lexical frequency were tagged (flickered) subliminally at 60 Hz. The tagging response measured when fixating on the pre-target word reflected parafoveal previewing of the target word. We observed a stronger tagging response as early as 100 ms following fixations on pre-target words that were followed by target words of low compared with high lexical frequency. Moreover, the difference in tagging response with respect to target lexicality predicted individual reading speed. Our findings demonstrate that reading unfolds in the fovea and parafovea simultaneously to support fluent reading.

scholarly journals Lexical parafoveal previewing predicts reading speed

2021 ◽  
Author(s):  
Yali Pan ◽  
Steven Frisson ◽  
Ole Jensen
Keyword(s):  
Visual Acuity ◽  
Eye Tracking ◽  
Target Word ◽  
Reading Speed ◽  
Critical Role ◽  
Reading Task ◽  
Fluent Reading ◽  
Neuronal Mechanisms ◽  
Competing Models ◽  
Individual Reading

Abstract While reading is an essential human skill, the neuronal mechanisms supporting proficient reading are not well understood. In spite of the reduced visual acuity, parafoveal information plays a critical role in natural reading. However, it is debated whether words are previewed parafoveally at the lexical level. This is a key dispute for competing models on reading. We found neural evidence for lexical parafoveal previewing by combining a novel rapid invisible frequency tagging (RIFT) approach with magnetoencephalography (MEG) and eye-tracking. In a silent reading task, target words were tagged (flickered) subliminally at 60 Hz. The tagging responses measured when fixating on the pre-target word reflected parafoveal previewing of the target word. We observed stronger tagging responses during pre-target fixations when followed by low compared to high lexical frequency targets. Moreover, this lexical previewing predicted individual reading speed. Our findings demonstrate that reading unfolds in the fovea and parafovea simultaneously to support fluent reading.

scholarly journals Neural evidence for lexical parafoveal processing

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yali Pan ◽  
Steven Frisson ◽  
Ole Jensen
Keyword(s):  
Visual Acuity ◽  
Eye Tracking ◽  
Target Word ◽  
Reading Speed ◽  
Parafoveal Processing ◽  
Lexical Frequency ◽  
Reading Task ◽  
Fluent Reading ◽  
Competing Models ◽  
Individual Reading

AbstractIn spite of the reduced visual acuity, parafoveal information plays an important role in natural reading. However, competing models on reading disagree on whether words are previewed parafoveally at the lexical level. We find neural evidence for lexical parafoveal processing by combining a rapid invisible frequency tagging (RIFT) approach with magnetoencephalography (MEG) and eye-tracking. In a silent reading task, target words are tagged (flickered) subliminally at 60 Hz. The tagging responses measured when fixating on the pre-target word reflect parafoveal processing of the target word. We observe stronger tagging responses during pre-target fixations when followed by low compared with high lexical frequency targets. Moreover, this lexical parafoveal processing is associated with individual reading speed. Our findings suggest that reading unfolds in the fovea and parafovea simultaneously to support fluent reading.

Lexical retrieval: The tip-of-the-tongue phenomenon

1987 ◽  
Vol 8 (3) ◽  
pp. 245-266 ◽  
Author(s):  
Susan E. Kohn ◽  
Arthur Wingfield ◽  
Lise Menn ◽  
Harold Goodglass ◽  
Jean Berko Gleason ◽  
...  
Keyword(s):  
Target Word ◽  
Word Retrieval ◽  
Lexical Retrieval ◽  
Word Knowledge ◽  
University Undergraduates ◽  
Tip Of The Tongue ◽  
Word Definitions ◽  
Target Words

ABSTRACTAn experiment is reported in which university undergraduates were given word definitions and asked to say aloud all responses that came to mind in the course of their attempts to retrieve the target words. Results showed that phonologically similar responses and word-fragments are good predictors of target word knowledge and the likelihood of eventual success in retrieval. Responses which were semantically related to the target word were less predictive of eventual success. Results are discussed in terms of their implications for interpreting tip-of-the-tongue analyses as a “window” on the process of word retrieval.

Reactivity of Judgments of Learning in a Levels-of-Processing Paradigm

2020 ◽  
Vol 228 (4) ◽  
pp. 278-290 ◽  
Author(s):  
Eylul Tekin ◽  
Henry L. Roediger
Keyword(s):  
Target Word ◽  
Paired Associate ◽  
Judgments Of Learning ◽  
Paired Associate Learning ◽  
Levels Of Processing ◽  
Pleasantness Rating ◽  
Associate Learning ◽  
Counting Task ◽  
Reactive Effect ◽  
Target Words

Abstract. Recent studies have shown that judgments of learning (JOLs) are reactive measures in paired-associate learning paradigms. However, evidence is scarce concerning whether JOLs are reactive in other paradigms. In old/new recognition experiments, we investigated the reactivity effects of JOLs in a levels-of-processing (LOP) paradigm. In Experiments 1 and 2, for each word, subjects saw a yes/no orienting question followed by the target word and a response. Then, they either did or did not make a JOL. The yes/no questions were about target words’ appearances, rhyming properties, or category memberships. In Experiment 3, for each word, subjects gave a pleasantness rating or counted the letter “e ”. Our results revealed that JOLs enhanced recognition across all orienting tasks in Experiments 1 and 2, and for the e-counting task in Experiment 3. This reactive effect was salient for shallow tasks, attenuating – but not eliminating – the LOP effect after making JOLs. We conclude that JOLs are reactive in LOP paradigms and subjects encode words more effectively when providing JOLs.

Relationship between the target word form and children’s productions: place of articulation in Consonant-Vowel-Consonant (C1VC2) words in American English

Phonetica ◽  
2021 ◽  
Vol 78 (1) ◽  
pp. 65-94
Author(s):  
Katsura Aoyama ◽  
Barbara L. Davis
Keyword(s):  
Target Word ◽  
American English ◽  
English Word ◽  
Word Form ◽  
Single Word ◽  
Place Of Articulation ◽  
Target Words

Abstract The aim of the present study was to investigate relationships between characteristics of children’s target words and their actual productions during the single-word period in American English. Word productions in spontaneous and functional speech from 18 children acquiring American English were analyzed. Consonant sequences in 3,328 consonant-vowel-consonant (C1VC2) target words were analyzed in terms of global place of articulation (labials, coronals, and dorsals). Children’s actual productions of place sequences were compared between target words containing repeated place sequences (e.g., mom, map, dad, not) and target words containing variegated place sequences (e.g., mat, dog, cat, nap). Overall, when the target word contained two consonants at the same global place of articulation (e.g., labial-labial, map; coronal-coronal, not), approximately 50% of children’s actual productions matched consonant place characteristics. Conversely, when the target word consisted of variegated place sequences (e.g., mat, dog, cat, nap), only about 20% of the productions matched the target consonant sequences. These results suggest that children’s actual productions are influenced by their own production abilities as well as by the phonetic forms of target words.

Mislocalization of stationary and flashed bars after saccadic inward and outward adaptation of reactive saccades

2012 ◽  
Vol 107 (11) ◽  
pp. 3062-3070 ◽  
Author(s):  
Fabian Schnier ◽  
Markus Lappe
Keyword(s):  
Saccade Target ◽  
Saccade Amplitude ◽  
Presentation Duration ◽  
Target Presentation ◽  
Adaptation Mechanisms ◽  
Long Duration ◽  
Neuronal Mechanisms ◽  
The Difference ◽  
Saccade Adaptation

Recent studies have shown that saccadic inward adaptation (i.e., the shortening of saccade amplitude) and saccadic outward adaptation (i.e., the lengthening of saccade amplitude) rely on partially different neuronal mechanisms. There is increasing evidence that these differences are based on differences at the target registration or planning stages since outward but not inward adaptation transfers to hand-pointing and perceptual localization of flashed targets. Furthermore, the transfer of reactive saccade adaptation to long-duration overlap and scanning saccades is stronger after saccadic outward adaptation than that after saccadic inward adaptation, suggesting that modulated target registration stages during outward adaptation are increasingly used in the execution of saccades when the saccade target is visually available for a longer time. The difference in target presentation duration between reactive and scanning saccades is also linked to a difference in perceptual localization of different targets. Flashed targets are mislocalized after inward adaptation of reactive and scanning saccades but targets that are presented for a longer time (stationary targets) are mislocalized stronger after scanning than after reactive saccades. This link between perceptual localization and adaptation specificity suggests that mislocalization of stationary bars should be higher after outward than that after inward adaptation of reactive saccades. In the present study we test this prediction. We show that the relative amount of mislocalization of stationary versus flashed bars is higher after outward than that after inward adaptation of reactive saccades. Furthermore, during fixation stationary and flashed bars were mislocalized after outward but not after inward adaptation. Thus, our results give further evidence for different adaptation mechanisms between inward and outward adaptation and harmonize some recent research.

Migrating Progenitor Cells Derived From Injured Cartilage Surface Respond to Damage-Associated Molecular Patterns

Cartilage ◽  
2021 ◽  
pp. 194760352110495
Author(s):  
Lei Ding ◽  
Cheng Zhou ◽  
Hongjun Zheng ◽  
Quanming Wang ◽  
Haiyan Song ◽  
...  
Keyword(s):  
Articular Cartilage ◽  
Progenitor Cells ◽  
Quantitative Polymerase Chain Reaction ◽  
Critical Role ◽  
Cartilage Degeneration ◽  
Expression Levels ◽  
Chondrogenic Progenitor Cells ◽  
The Difference ◽  
Molecular Patterns ◽  
Damage Associated Molecular Patterns

Objective: To delineate the response of migrating chondrogenic progenitor cells (CPCs) that arose from the surface of mechanically injured articular cartilage to proinflammatory damage-associated-molecular-patterns (DAMPs). Design: Bovine CPCs and non-CPC chondrocytes isolated from either impacted or scratched articular cartilage were studied. Those 2 types of cells were treated with mitochondrial DAMPs (MTDs; 10 nM fMLF and 10 µg/mL CpG DNA), or 10 nM HMGB1, or 10 ng/mL IL-1b for 24 hours. At the end of experiments, conditioned media and cell lysates were collected for analysis of expression levels of matrix metalloproteinases (MMPs), chemokines, and cytokines that are associated with cartilage degeneration with Western blotting and quantitative polymerase chain reaction. The difference of expression levels was compared by Welch’s t-test. Results: Our data indicated that HMGB1 and MTDs remarkably upregulated pro-MMP-13 expression in CPCs. Compared with non-CPCs, CPCs expressed significantly more baseline mRNAs of MMP-13, CXCL12, and IL-6. MTDs greatly increased the expression of MMP-13 and IL-6 in CPCs by over 100-fold ( P < 0.001). MTDs also significantly increased IL-8 expression in CPCs to a similar extent ( P < 0.001). However, when IL-1b was present, CPCs expressed less MMP-3 and active MMP-13 proteins as well as less CCL2 and IL-6 than did non-CPCs. Conclusions: We concluded that CPCs were more sensitive than non-CPCs in response to DAMPs, especially MTDs. The proinflammatory nature of CPCs implied their critical role in the early phase of posttraumatic osteoarthritis development.

scholarly journals Dialysate Calcium Levels: Do They Matter?

2018 ◽  
Vol 47 (1-3) ◽  
pp. 230-235 ◽  
Author(s):  
Frank M. van der Sande ◽  
Karlien J.A. ter Meulen ◽  
Peter Kotanko ◽  
Jeroen P. Kooman
Keyword(s):  
Vitamin D ◽  
Critical Role ◽  
Essential Element ◽  
Vascular Pathology ◽  
Phosphate Binders ◽  
Multiple Parameters ◽  
Vitamin D Analogues ◽  
Endocrine Disturbances ◽  
Increased Risk ◽  
The Difference

Background: Calcium (Ca) is an essential element that plays a critical role in many biological processes. In dialysis patients, the regulation of Ca balance is highly complex, given the absence of kidney function, endocrine disturbances and the use of drugs such as phosphate binders, vitamin D analogues, and calcimimetics. Also, the use of different dialysate Ca (DCa) baths has profound effect on Ca balance, which depends both on the difference between the Ca concentration in the bath and the serum of the patients, as on the ultrafiltration volume. Summary: The choice of DCa may have important short- and long-term consequences. While lower DCa (especially < 2.5 mEq/L) concentrations have been associated with an increased risk of sudden cardiac death in observational studies, DCa in the higher ranges (3.0 mEq/L and above) may contribute to vascular pathology. Intra-dialytic hemodynamics may also be affected by the choice of DCa. In general, lower DCa concentrations are associated with an increase, and higher DCa concentrations with a decrease in parathyroid hormone (PTH) levels. Preliminary data has suggested that a DCa of 2.75 mEq/L may help in obtaining a net zero intradialytic Ca balance in individual patients, but clinical experience is still limited. Key Message: The optimal Ca balance depends on multiple parameters including blood Ca levels, PTH and the use of phosphate binders and vitamin D analogues, as well as on the risk of hemodynamic stability and cardiac arrhythmias. Therefore, DCa prescription should be individualised. A DCa of 2.75 mEq/L may be useful adjunct for dialysis providers.

scholarly journals The effects of increase and variations in time presentations for second language vocabulary learning

2013 ◽  
Vol 2 (1) ◽  
Author(s):  
Radina Mohamad Deli
Keyword(s):  
Second Language ◽  
Target Word ◽  
Vocabulary Learning ◽  
Word Retrieval ◽  
Time Lags ◽  
Order Of Presentation ◽  
Target Words

Barcroft (2007) found opportunities for word retrieval to be advantageous during second language vocabulary learning. This study extended such a finding and investigated the effect of increased time in target-word retrieval for learning new vocabulary in the L2, as well as the effect of presentation orders of different time conditions on word retrieval. The data were obtained from 17 native Arab speakers who attempted to learn 24 new English words by viewing 24 word-picture pairs. Each picture and its corresponding word were viewed with different time lags of 0, 6 and 12 seconds between them in different presentation orders. The results showed that, although the increased time does not positively affect word retrieval, the overall findings correspond to Barcroft’s (2007) view, at least in the case of 6 seconds lag. The results also showed that the production of target words in both the control and retrieval-oriented conditions depend on and vary according to the order of presentation, particularly in the case of 6 seconds lag in which word gain is found to be highest when the lag is presented first and second.

The effects of discourse support on the organization and production of children's utterances

1987 ◽  
Vol 8 (1) ◽  
pp. 55-66 ◽  
Author(s):  
Nancy W. Streim ◽  
Robin S. Chapman
Keyword(s):  
Target Word ◽  
Word Frequency ◽  
Process Model ◽  
Low Frequency ◽  
Sentence Production ◽  
Support Condition ◽  
Description Task ◽  
Target Words

ABSTRACTThis study asked whether lexical availability affects the length, complexity, order of mention, and fluency of children's utterances. Lexical availability was manipulated through discourse support (present or absent) and word frequency (high or low) for 40 target nouns. Length was indexed by mean number of words per communication unit. Complexity was indexed by mean number of verbs per communication unit. Earlier mention was measured by mean number of words preceding the target word in each communication unit. Thirty-six subjects, aged 4, 6, and 8, described 40 illustrations containing a high or low frequency target noun referent. In the discourse support condition, provided for one half of the target words, subjects named the target word prior to the description task. Results showed that the number of responses containing the target word varied with age, word frequency and discourse support condition; length of responses varied with age and its interaction with discourse support; earlier mention varied with age and discourse support condition; and fluency varied with discourse support condition. The results are discussed from the viewpoint of Bock's process model of sentence production.

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