Audiovisual temporal fusion in 6-month-old infants
The aim of this study was to investigate neural dynamics of audiovisual temporal fusion processes in 6-month-old infants using event-related brain potentials (ERPs). In a habituation-test paradigm, infants did not show any behavioral signs of discrimination of an audiovisual asynchrony of 200 ms, in...
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| Format: | Article |
| Language: | English |
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Elsevier
2014-07-01
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| Series: | Developmental Cognitive Neuroscience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878929314000036 |
| _version_ | 1819057207547789312 |
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| author | Franziska Kopp |
| author_facet | Franziska Kopp |
| author_sort | Franziska Kopp |
| collection | DOAJ |
| description | The aim of this study was to investigate neural dynamics of audiovisual temporal fusion processes in 6-month-old infants using event-related brain potentials (ERPs). In a habituation-test paradigm, infants did not show any behavioral signs of discrimination of an audiovisual asynchrony of 200 ms, indicating perceptual fusion. In a subsequent EEG experiment, audiovisual synchronous stimuli and stimuli with a visual delay of 200 ms were presented in random order. In contrast to the behavioral data, brain activity differed significantly between the two conditions. Critically, N1 and P2 latency delays were not observed between synchronous and fused items, contrary to previously observed N1 and P2 latency delays between synchrony and perceived asynchrony. Hence, temporal interaction processes in the infant brain between the two sensory modalities varied as a function of perceptual fusion versus asynchrony perception. The visual recognition components Pb and Nc were modulated prior to sound onset, emphasizing the importance of anticipatory visual events for the prediction of auditory signals. Results suggest mechanisms by which young infants predictively adjust their ongoing neural activity to the temporal synchrony relations to be expected between vision and audition. |
| first_indexed | 2024-12-21T13:35:38Z |
| format | Article |
| id | doaj.art-cfd1448d31fd42f6aa489002895beb2d |
| institution | Directory Open Access Journal |
| issn | 1878-9293 1878-9307 |
| language | English |
| last_indexed | 2024-12-21T13:35:38Z |
| publishDate | 2014-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Developmental Cognitive Neuroscience |
| spelling | doaj.art-cfd1448d31fd42f6aa489002895beb2d2022-12-21T19:02:10ZengElsevierDevelopmental Cognitive Neuroscience1878-92931878-93072014-07-019C566710.1016/j.dcn.2014.01.001Audiovisual temporal fusion in 6-month-old infantsFranziska KoppThe aim of this study was to investigate neural dynamics of audiovisual temporal fusion processes in 6-month-old infants using event-related brain potentials (ERPs). In a habituation-test paradigm, infants did not show any behavioral signs of discrimination of an audiovisual asynchrony of 200 ms, indicating perceptual fusion. In a subsequent EEG experiment, audiovisual synchronous stimuli and stimuli with a visual delay of 200 ms were presented in random order. In contrast to the behavioral data, brain activity differed significantly between the two conditions. Critically, N1 and P2 latency delays were not observed between synchronous and fused items, contrary to previously observed N1 and P2 latency delays between synchrony and perceived asynchrony. Hence, temporal interaction processes in the infant brain between the two sensory modalities varied as a function of perceptual fusion versus asynchrony perception. The visual recognition components Pb and Nc were modulated prior to sound onset, emphasizing the importance of anticipatory visual events for the prediction of auditory signals. Results suggest mechanisms by which young infants predictively adjust their ongoing neural activity to the temporal synchrony relations to be expected between vision and audition.http://www.sciencedirect.com/science/article/pii/S1878929314000036Multisensory perceptionAudiovisualInfancyERPSynchrony |
| spellingShingle | Franziska Kopp Audiovisual temporal fusion in 6-month-old infants Developmental Cognitive Neuroscience Multisensory perception Audiovisual Infancy ERP Synchrony |
| title | Audiovisual temporal fusion in 6-month-old infants |
| title_full | Audiovisual temporal fusion in 6-month-old infants |
| title_fullStr | Audiovisual temporal fusion in 6-month-old infants |
| title_full_unstemmed | Audiovisual temporal fusion in 6-month-old infants |
| title_short | Audiovisual temporal fusion in 6-month-old infants |
| title_sort | audiovisual temporal fusion in 6 month old infants |
| topic | Multisensory perception Audiovisual Infancy ERP Synchrony |
| url | http://www.sciencedirect.com/science/article/pii/S1878929314000036 |
| work_keys_str_mv | AT franziskakopp audiovisualtemporalfusionin6montholdinfants |