Orthographic processing and visual sequential memory in unexpectedly poor spellers

2008 ◽  
Vol 31 (1) ◽  
pp. 136-156 ◽  
Author(s):  
Virginia M. Holmes ◽  
Aisling M. Malone ◽  
Holly Redenbach
Keyword(s):  
Orthographic Processing ◽  
Sequential Memory ◽  
Poor Spellers

scholarly journals Priming effects in the recognition of simple and complex words and pseudowords

2018 ◽  
Vol 39 (2) ◽  
pp. 198-222
Author(s):  
Miguel Lázaro ◽  
Víctor Illera ◽  
Javier Sainz
Keyword(s):  
Word Recognition ◽  
Low Frequency ◽  
Morphological Processing ◽  
Orthographic Processing ◽  
Frequency Effect ◽  
Experimental Conditions ◽  
Priming Effects ◽  
The Third ◽  
Complex Words ◽  
Intense Debate

AbstractWhether morphological processing of complex words occurs beyond orthographic processing is a matter of intense debate. In this study, morphological processing is examined by presenting complex words (brujería -> brujo –witchcraft -> witch), as well as simple (brujaña->brujo) and complex pseudowords (brujanza ->brujo), as primes in three masked lexical decision tasks. In the first experiment, the three experimental conditions facilitated word recognition in comparison to the control condition, but no differences emerged between them. Given the importance of the surface frequency effect observed, a second experiment was conducted. The results fully replicate those observed in the first one, but this time with low frequency targets. In the third experiment, vowels were removed from the stems of primes to reduce the orthographic overlap between primes and targets and, therefore, the influence of the embedded stem effect. The results show facilitative effects only for complex words. However, paired comparisons show no differences between experimental conditions. The overall results show the central role played by the processing of stems in visual word recognition and are explained in terms of current models of morphological processing.

INFLUENCE OF INTONATION ON AUDITORY SEQUENTIAL MEMORY SKILLS

1980 ◽  
Vol 50 (3) ◽  
pp. 703-708
Author(s):  
JACQUELINE I. JOHNSON ◽  
STEVEN B. LEDER ◽  
RICHARD L. EGELSTON
Keyword(s):  
Sequential Memory

scholarly journals Traversal Caches: A Framework for FPGA Acceleration of Pointer Data Structures

2010 ◽  
Vol 2010 ◽  
pp. 1-16 ◽  
Author(s):  
James Coole ◽  
Greg Stitt
Keyword(s):  
Data Structures ◽  
Reconfigurable Computing ◽  
Application Development ◽  
Sequential Memory ◽  
Generalized Framework ◽  
Field Programmable ◽  
Order Of Magnitude ◽  
Programmable Gate Arrays ◽  
Irregular Data ◽  
Access Patterns

Field-programmable gate arrays (FPGAs) and other reconfigurable computing (RC) devices have been widely shown to have numerous advantages including order of magnitude performance and power improvements compared to microprocessors for some applications. Unfortunately, FPGA usage has largely been limited to applications exhibiting sequential memory access patterns, thereby prohibiting acceleration of important applications with irregular patterns (e.g., pointer-based data structures). In this paper, we present a design pattern for RC application development that serializes irregular data structure traversals online into a traversal cache, which allows the corresponding data to be efficiently streamed to the FPGA. The paper presents a generalized framework that benefits applications with repeated traversals, which we show can achieve between 7x and 29x speedup over pointer-based software. For applications without strictly repeated traversals, we present application-specialized extensions that benefit applications with highly similar traversals by exploiting similarity to improve memory bandwidth and execute multiple traversals in parallel. We show that these extensions can achieve a speedup between 11x and 70x on a Virtex4 LX100 for Barnes-Hut n-body simulation.

The development of orthographic processing skills in children in early French immersion programs

2014 ◽  
Vol 17 (1) ◽  
pp. 16-39 ◽  
Author(s):  
Eva Commissaire ◽  
Adrian Pasquarella ◽  
Becky Xi Chen ◽  
S. Hélène Deacon
Keyword(s):  
Language Learners ◽  
Second Language Learners ◽  
Factor Model ◽  
Orthographic Processing ◽  
French Immersion ◽  
Learning To Read ◽  
Underlying Factor ◽  
Correct Spelling ◽  
Immersion Programs ◽  
Language Variables

Children learning to read in two languages are faced with orthographic features from both languages, either unique to a language or similar across languages. In the present study, we examined how children develop orthographic processing skills over time (from grade 1 to grade 2) with a sample of Canadian children attending a French immersion program and we investigated the underlying factor structure of orthographic skills across English and French. Two orthographic processing tasks were administered in both languages: lexical orthographic processing (e.g. choose the correct spelling from people–peeple) and sub-lexical orthographic processing (e.g. which is the more word-like vaid–vayd?), which included both language-specific and language-shared orthographic regularities. Children’s performances in sub-lexical tasks increased with grade but were comparable across languages. Further, evidence for a one factor model including all measures suggested that there is a common underlying orthographic processing skill that cuts across measurement and language variables. Keywords: orthographic processing; reading; French immersion; bilinguals; second language learners

Orthographic processing deficits in developmental dyslexia: Beyond the ventral visual stream

NeuroImage ◽  
2016 ◽  
Vol 128 ◽  
pp. 316-327 ◽  
Author(s):  
Marianna Boros ◽  
Jean-Luc Anton ◽  
Catherine Pech-Georgel ◽  
Jonathan Grainger ◽  
Marcin Szwed ◽  
...  
Keyword(s):  
Developmental Dyslexia ◽  
Orthographic Processing ◽  
Visual Stream ◽  
Ventral Visual Stream ◽  
Processing Deficits

scholarly journals Nested sequences of hippocampal assemblies during behavior support subsequent sleep replay

Science ◽  
2018 ◽  
Vol 362 (6415) ◽  
pp. 675-679 ◽  
Author(s):  
Céline Drieu ◽  
Ralitsa Todorova ◽  
Michaël Zugaro
Keyword(s):  
Neuronal Activity ◽  
Time Scale ◽  
Memory Formation ◽  
Place Cells ◽  
Behavior Support ◽  
Initial Formation ◽  
Memory Traces ◽  
Sequential Memory ◽  
Episodic Memories ◽  
Initial Storage

Consolidation of spatial and episodic memories is thought to rely on replay of neuronal activity sequences during sleep. However, the network dynamics underlying the initial storage of memories during wakefulness have never been tested. Although slow, behavioral time scale sequences have been claimed to sustain sequential memory formation, fast (“theta”) time scale sequences, nested within slow sequences, could be instrumental. We found that in rats traveling passively on a model train, place cells formed behavioral time scale sequences but theta sequences were degraded, resulting in impaired subsequent sleep replay. In contrast, when the rats actively ran on a treadmill while being transported on the train, place cells generated clear theta sequences and accurate trajectory replay during sleep. Our results support the view that nested sequences underlie the initial formation of memory traces subsequently consolidated during sleep.

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