Evidence map›Paper›PMID 34577294›Full record

ArticleSensors (Basel, Switzerland)2021

The Sample Size Matters: To What Extent the Participant Reduction Affects the Outcomes of a Neuroscientific Research. A Case-Study in Neuromarketing Field.

Alessia Vozzi, Vincenzo Ronca, Pietro Aricò, Gianluca Borghini, Nicolina Sciaraffa, Patrizia Cherubino, Arianna Trettel, Fabio Babiloni, Gianluca Di Flumeri

Abstract read
In one paragraph

Article in Sensors (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Alessia VozziDepartment of Anatomical, Histological, Forensic & Orthopedic Sciences, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy.ORCID 0000-0002-8584-5023
Vincenzo RoncaDepartment of Anatomical, Histological, Forensic & Orthopedic Sciences, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy.ORCID 0000-0002-7174-6331
Pietro AricòBrainSigns srl, Via Lungotevere Michelangelo, 9, 00192 Rome, Italy.ORCID 0000-0002-3831-6620
Gianluca BorghiniBrainSigns srl, Via Lungotevere Michelangelo, 9, 00192 Rome, Italy.ORCID 0000-0001-8560-5671
Nicolina SciaraffaBrainSigns srl, Via Lungotevere Michelangelo, 9, 00192 Rome, Italy.
Patrizia CherubinoBrainSigns srl, Via Lungotevere Michelangelo, 9, 00192 Rome, Italy.
Arianna TrettelBrainSigns srl, Via Lungotevere Michelangelo, 9, 00192 Rome, Italy.
Fabio BabiloniBrainSigns srl, Via Lungotevere Michelangelo, 9, 00192 Rome, Italy.ORCID 0000-0002-4962-176X
Gianluca Di FlumeriBrainSigns srl, Via Lungotevere Michelangelo, 9, 00192 Rome, Italy.ORCID 0000-0003-4426-051X

Funding

Individual grant BE-FOR-ERC for the project "BRAIN2GETHER" recognized by Sapienza Uni-versity of Rome to Dr. Gianluca Di Flumeri individualMINDTOOTH: Wearable device to decode human mind by neurometrics for a new concept of smart interaction with the surrounding environment 950998SAFEMODE: Strengthening synergies between Aviation and maritime in the area of human Factors towards achieving more Efficient and resilient MODE of transportation 814961SIMUSAFE: Simulator Of Behavioral Aspects For Safer Transport 723386Transparent artificial intelligence and automation to air traffic management systems, ''ARTIMATION,'' 894238WORKINGAGE: Smart Working environments for all Ages 826232
6 · The paper itself

Abstract

The sample size is a crucial concern in scientific research and even more in behavioural neurosciences, where besides the best practice it is not always possible to reach large experimental samples. In this study we investigated how the outcomes of research change in response to sample size reduction. Three indices computed during a task involving the observations of four videos were considered in the analysis, two related to the brain electroencephalographic (EEG) activity and one to autonomic physiological measures, i.e., heart rate and skin conductance. The modifications of these indices were investigated considering five subgroups of sample size (32, 28, 24, 20, 16), each subgroup consisting of 630 different combinations made by bootstrapping n (n = sample size) out of 36 subjects, with respect to the total population (i.e., 36 subjects). The correlation analysis, the mean squared error (MSE), and the standard deviation (STD) of the indexes were studied at the participant reduction and three factors of influence were considered in the analysis: the type of index, the task, and its duration (time length). The findings showed a significant decrease of the correlation associated to the participant reduction as well as a significant increase of MSE and STD (

Indexed as

ElectroencephalographyNeurosciencesHeart RateHumansSample Sizeapplied neurosciencesEEGGSRHRsample sizesignal processing

Identifiers

PMID34577294
PMCPMC8473095

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.