Home  About us  Contact
 

Word Recognition Task (word + recognition_task)

Distribution by Scientific Domains
Psychology75%

Selected Abstracts

Error patterns in word reading among primary school children: A cross-orthographic study

DYSLEXIA, Issue 1 2004
Louise Miller Guron
Abstract A comparative investigation of word reading efficiency indicates that different strategies may be used by English and Swedish early readers. In a first study, 328 native English speakers from UK Years 3 and 6 completed a pen-and-paper word recognition task (the Wordchains test). Results were analysed for frequency and type of errors committed. A sample of 123 chronological-age-matched Swedish children carried out the same task on a matched Swedish test. For a sub-sample of 68 English/Swedish pairs matched on word recognition score and sex, significant differences were observed in a comparison of average and low scorers from the two language groups. The English children attempted more task items and committed more errors, while the Swedish group corrected their errors more, suggesting a difference in approach to the task. A second study of a larger Swedish sample (241 participants) found the same pattern of errors as Study 1. The implications of these findings are discussed in relation to the effects of orthographic depth and morphemic complexity. Copyright © 2004 John Wiley & Sons, Ltd. [source]

Word imageability affects the hippocampus in recognition memory

HIPPOCAMPUS, Issue 6 2005
Peter Klaver
Abstract Concrete words, whose meanings are readily imagined, are better remembered than abstract words. However, the neural correlates of this effect are poorly understood. Here, we investigated the effect of imageability on brain activity in the medial temporal lobe (MTL) processes underlying recognition memory. We recorded event-related potentials (ERPs) via depth electrodes from within the MTL in 14 patients with drug-resistant epilepsy. Patients performed a continuous word recognition task with words of high and low imageability (controlled for word frequency). Behaviorally, recognition performance was better for high, compared to low, imageable words. Two ERP components associated with recognition memory, the AMTL-N400 and the hippocampal late negative component, showed an old/new effect, but only the hippocampal P600 showed a main effect of imageability. We suggest that the hippocampal effect of imageability in recognition memory may be associated with conceptual or pictorial information processing of concrete words. © 2005 Wiley-Liss, Inc. [source]

The effect of word repetition on evoked magnetic responses in the human brain

JAPANESE PSYCHOLOGICAL RESEARCH, Issue 1 2000
Takahiro Sekiguchi
Stimulus repetition improves performance on word recognition tasks. We used magnetoencephalography (MEG) to investigate the brain areas associated with this word repetition effect. The participants were eight men and six women. The stimuli were 162 Japanese words each consisting of four katakana letters. The task was to read the words silently and memorize them for a subsequent recognition test. The words were presented one by one and repeated once after eight intervening words. Recordings were taken from bilateral temporal sites of the brain and the responses to the second presentations of the words were compared with those to the first presentations of the same words. Clear magnetic responses were observed in both the left and right hemispheres. In both hemispheres, the responses to the second words were significantly smaller than those to the first words, 250,600 ms after the stimulus onset. Multidipole source analyses showed that the activities were reduced by repetition in the bilateral peri-Sylvian areas, the bilateral medial temporal lobes, and the left angular gyrus. [source]

Reference-independent ERP old/new effects of auditory and visual word recognition memory: Joint extraction of stimulus- and response-locked neuronal generator patterns

PSYCHOPHYSIOLOGY, Issue 6 2007
Jürgen Kayser
Abstract To clarify polarity, topography, and time course of recognition memory ERP old/new effects during matched visual and auditory continuous word recognition tasks, unrestricted temporal PCA jointly analyzed stimulus- and response-locked, reference-free current source densities (31-channel, N=40). Randomization tests provided unbiased statistics for complete factor topographies. Old/new left parietal source effects were complemented by lateral frontocentral sink effects in both modalities, overlapping modality-specific P3 sources 160 ms preresponse. A mid-frontal sink 45 ms postresponse terminated the frontoparietal generator pattern, showed old/new effects consistent with bilateral activation of anterior cingulate and SMA, and preceded similar activity extending posteriorly along the longitudinal fissure. These methods separated old/new stimulus source (preresponse) and response sink (postresponse) effects from motor and modality-specific ERPs. [source]