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Record W2617225270 · doi:10.71781/26187

Bases neurologiques du phénomène de masquage visuel

2007· dissertation· fr· W2617225270 on OpenAlexfundno aff
Sébastien Marti

Bibliographic record

VenuePapyrus : Institutional Repository (Université de Montréal) · 2007
Typedissertation
Languagefr
FieldComputer Science
TopicVirtual Reality Applications and Impacts
Canadian institutionsnot available
FundersUniversité du Québec à Montréal
KeywordsArt

Abstract

fetched live from OpenAlex

There is growing evidence that attention is important for many aspects of perception.Recognition of a stimulus can be strongly degraded if a second stimulus is presented less than 150 ms later ("visual masking effect").Masking strength is influenced by the physical characteristics of the stimuli and the effect is even stronger if attentional processes are focused on another object ("Attentional blink, AB").The first part of our project examined the reasons for the increased masking effect during inattention.Our resuits suggest that visual masking is stronger when the mask is a new visual object in the visual scene, but is flot modulated when target and mask are presented simultaneousÏy.In a second part, we measured cerebral activity using functional magnetic resonance imaging during visual masking.We found that activity in occipito-temporal cortex was inftuenced by sequential rnasks more than by simultaneous masks.Recognition performance correlated with activity in temporo-parietal areas.Our results suggest that the effect of inattention on visual masking is linked to the detection and the consolidation of new objects in the visual scene, and that this effect involves the occipito-temporal cortex.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.007
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: Theoretical or conceptual
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.049
Threshold uncertainty score0.098

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.007
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0000.001
Bibliometrics0.0040.003
Science and technology studies0.0020.008
Scholarly communication0.0060.007
Open science0.0010.002
Research integrity0.0020.003
Insufficient payload (model declined to judge)0.0150.001

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.010
GPT teacher head0.214
Teacher spread0.203 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designTheoretical or conceptual
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2007
Admission routes1
Has abstractno

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Same venuePapyrus : Institutional Repository (Université de Montréal)Same topicVirtual Reality Applications and ImpactsFrench-language works237,207