Infants' Fast Neural Categorization of Artificial Objects: The Impact of Stimulus and Task Characteristics.
This study explores how 7-month-old infants categorize graphical images varying in basic perceptual features by using a fast periodic visual stimulation (FPVS) task. Most participants were Caucasian and their parents had a higher education, but the family's socioeconomic background was mixed. Experi...
| Publicado en: | Developmental Psychology Vol. 59; no. 8; pp. 1496 - 1511 |
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| Autores principales: | , |
| Formato: | Artículo |
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American Psychological Association
Aug2023
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=165476083&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 165476083 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 00121649 DPS jtl: Developmental Psychology issn: 00121649 maglogo: N pubinfo: dt: Aug2023 vid: 59 iid: 8 pid: 34 pub: American Psychological Association artinfo: ui: 165476083 10.1037/dev0001518 ppf: 1496 ppct: 15 formats: tig: atl: Infants' Fast Neural Categorization of Artificial Objects: The Impact of Stimulus and Task Characteristics. aug: au: Pauen, Sabina Peykarjou, Stefanie affil: Department of Psychology, Heidelberg University su: Task performance Socioeconomic factors Motor ability Children Evoked potentials (Electrophysiology) Electroencephalography Sensory stimulation Visual perception Descriptive statistics Cognitive testing sug: subj: Task performance Socioeconomic factors Motor ability Children Evoked potentials (Electrophysiology) Electroencephalography Sensory stimulation Visual perception Descriptive statistics Cognitive testing keyword: category discrimination event-related potentials (ERPs) familiarization fast periodic visual stimulation (FPVS) infant development perceptual categorization category discrimination event-related potentials (ERPs) familiarization fast periodic visual stimulation (FPVS) infant development perceptual categorization ab: This study explores how 7-month-old infants categorize graphical images varying in basic perceptual features by using a fast periodic visual stimulation (FPVS) task. Most participants were Caucasian and their parents had a higher education, but the family's socioeconomic background was mixed. Experiment 1 (N = 23) tested brain responses to configurational versus scrambled image sequences and found an oddball effect for both conditions, with configurational information leading to stronger neural responses. Experiment 2 explored the role of category learning for later FPVS performance: Group A (control; n = 22) participated in the FPVS categorization task only. Group B (fam; n = 21) was first familiarized with standard exemplars. Group C (fam + contrast; n = 29) was presented an additional exemplar of the contrasting category before the FPVS task. Electroencephalogram analyses revealed a decrease in Nc amplitude (measuring attention) throughout the familiarization phase. Long looking at the out-of-category exemplar in Group C indicated infants' visual interest. Brain responses in the subsequently presented FPVS were strong but did not differ between groups. This highlights the ability of the infant brain to organize perceptual input very rapidly without requiring familiarization but also points to the need for further studies exploring brain processes associated with infants' category learning and categorization at the brain level. Public Significance Statement: Within milliseconds, the brain of 7-month-old infants categorized artificial objects based on low-level perceptual features, but responses were stronger when additional configurational information was provided. A familiarization with the standard category led to neural adaptation and to visual interest in a subsequently presented out-of-category exemplar, but this experience did not affect categorization in a FPVS task, thus pointing to the need of more studies exploring the mechanisms underlying infant categorization. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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