In catch trials, large numbers elicit greater right-hemisphere P300 positivity than small numbers¶
Claim · All claims
Evidence · 1 study · causalr1·q3
Currency · newest study 2009 · not yet checked against its sources · not reviewed by a person
Subclaims¶
Reading the evidence codes
q is the design tier, i the impact, n the sample, and the kind with its r
the rigour judged within that kind: what each code means.
This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q3 i? A number x hemisphere interaction in the P300 band showed large numbers elicited greater positivity than small numbers in the right hemisphere, though simple effects were not significant. → Salillas E 2009
Evidence¶
Salillas E 2009¶
Salillas E, Grana´ A, El-Yagoubi R, Semenza C (2009) Numbers in the Blind's ''Eye''. PLoS ONE 4(7): e6357. https://doi.org/10.1371/journal.pone.0006357
q3 · i? · causal · r1
Catch-trial analysis (pink noise in both channels, no target) in the same ERP experiment with 7 blind and 7 sighted participants. The interaction "Large numbers elicited a greater positivity than small numbers in the right hemisphere", but the article states the simple effects for this interaction did not reach significance. No effect size is printed.
"In the latency band of the P300 (300–420 ms.) a number 6 hemisphere interaction was found in the lateral electrodes (F(1,12) = 17.9, p = 0.001). Large numbers elicited a greater positivity than small numbers in the right hemisphere."
Discussion¶
Related Claims¶
- Number-size/location congruency modulates the cognitive P300 only in blind participants — related
- Number-size/location congruency modulates the early sensory N100 only in sighted participants — related
- The authors interpret blind participants' number-space congruency processing as restricted to a controlled, working-memory-dependent cognitive level — related
- In an auditory number-cue detection task, both blind and sighted adults detect targets faster on number-size/location congruent trials, with no group difference — related
- ERP amplitude shows larger negativity for incongruent and No-Go trials at frontal midline sites — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
catch-trial-number-hemisphere-p300 |
title |
In catch trials, large numbers elicit greater right-hemisphere P300 positivity than small numbers |
description |
In catch trials, large numbers elicit greater right-hemisphere P300 positivity than small numbers |
status |
review |
evidence_strength |
weak |
newest_evidence |
2009 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — salillas-e-2009 |
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