Infant N290 event-related potentials and stimulus-specific adaptation to face stimuli

Data for publication:  "Neural specialization to human faces at the age of 7 months".

Further details will be available at: https://github.com/yrttiahoS/ssa/

Metadata:

I. Event-related potentials

The current study investigated both cortical sensitivity and categorical specificity through event-related potentials (ERPs) previously implicated in face processing in 7-month-old infants (N290) and adults (N170). Using a category-specific repetition/adaptation paradigm, cortical specificity to human faces, or control stimuli (cat faces), was operationalized as changes in ERP amplitude between conditions where a face probe was alternated with categorically similar or dissimilar adaptors. In adults, increased N170 for human vs. cat faces and category-specific release from adaptation for face probes alternated with cat adaptors was found. In infants, a larger N290 was found for cat vs. human probes. Category-specific repetition effects were also found in infant N290 and the P1-N290 peak-to-peak response where latter indicated category-specific release from adaptation for human face probes resembling that found in adults.

*Dataset files: N290_P1_infant, N170_P1_adult.sav

*EEG data in EEGLAB’s format,

Filenames indicate type of data with:

1) Initial numerical code indicating (anonymized) participant number, "adult/infant" indicating participant group

2) f1/c2/f3/c3 indicating stimulus conditions probe:face, adaptor:face / probe:cat, adaptor:cat / probe:face, adaptor:cat / probe:cat,adaptor:face, respectively

 3) Final number _1_ or _2_ indicates block number for adult participants (in the order of presentation)

Files with only codes 1) and 2) are continuous data with all triggers included

*video-based Quality Control is listed in file: anon_vQC2022-09-22.xlsx*video-based Quality Control is listed in file: anon_vQC2022-09-22.xlsx

*Analysis syntax: https://github.com/yrttiahoS/ssa/

*Dataset updates: TBA at https://github.com/yrttiahoS/ssa/

II. Temperament questionnaire

*Data collection: Temperament data were collected from participants of an infant event-related potential (ERP) study as potential correlate of outcome variables and as a descriptor of the participant group. Participants were 7-month-old infants from families volunteering in the brain research study, which were contacted through information from a population registry sample. Infant temperament was assessed by parent-reported IBQ-R short form (Putnam, S. P., Helbig, A., Gartstein, M.A., Rothbart, M.K. & Leerkes, E. M. (2014). Development and assessment of short and very short forms of the Infant Behavior Questionnaire-Revised. Journal of Personality Assessment, 96, 445-458. Finnish translation: Professor Katri Räikkönen-Talvitie and the Developmental Psychology Research Group University of Helsinki, Finland)

*Authors of the dataset: Santeri Yrttiaho, Mikko Peltola, Anneli Kylliäinen, Tiina, Parviainen, Jari Hietanen

*Site of data collection: Human Information Processing laboratory, Tampere University, Finland

*Funding: Emil Aaltonen Foundation, Tampere University, Academy of Finland

*Participant demographics:  Participant group is described by age of M(SD) = 30.5(0.5) weeks. Participants were from Tampere metropolitan area, Finland. Data were collected during Fall 2020 (October 16th  – December 7th, 2020).

*Data content. Initial data will contain group level statistics and the individual data will be made available as additional files after publication of study results in a peer-reviewed article. Data is anonymized. Individual data contains IBQ-R short form items, scales, and factors as well as participant gender and age in weeks. Data also includes variable indicating whether the participant was included in the final ERP analysis after EEG quality control.

*variable names: see 'Scale abbreviations.docx' and for full discussion the original article by Putnam et al. (2014).

*Dataset files

1. IBQ-R-short-Finnish_dataset.sav / data of items, scales, and factors

2. SSA_infant_ibq-r_summary.sps / syntax for computing scores

3. IBQ-R-short-Finnish_descriptives.spv / output of descriptive statistics

4. Scale abbreviations.docx / explanation of variable names