EEG theta rhythm in infants and preschool children

Orekhova, Elena V.; Stroganova, Tatiana A.; Posikera, I. N.; Elam, Mikael

doi:10.1016/j.clinph.2005.12.027

Cited by 197 publications

(211 citation statements)

References 63 publications

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“…So far, studies that have related theta synchronization to attentional processes have all investigated slightly older infants (Bazhenova et al, 2007;Orekhova et al, 1999;Orekhova et al, 2006;Stroganova et al, 1998). Theta synchronization has nonetheless been discussed to be related to the involvement of an attention network that is responsible for an executive control of attention that emerges between 4 and 6 months of age (Bazhenova et al, 2007;Mundy & Newell, 2007;Orekhova et al, 1999).…”

Section: Discussionmentioning

confidence: 99%

“…The theta 1 sub-band was defined as ranging between 3.6 and 4.8 Hz with a peak at 4.4 Hz (Orekhova, Stroganova, Posikera, & Elam, 2006). Theta activity in this frequency range is more pronounced on frontal channels Orekhova et al, 2006;Stroganova, Orekhova, & Posikera, 1998).…”

Section: Theta Activitymentioning

confidence: 99%

“…Compared to alpha activity, the theta frequency range does not seem to shift with age (Saby & Marshall, 2012;Stroganova & Orekhova, 2007). Thus, the mean amplitude at 4 Hz at 400-800 ms after stimulus onset on fronto-central electrodes (F3, Fz, F4, FC3, and FC4) served as the dependent variable for all age groups (Orekhova et al, 2006).…”

Section: Theta Activitymentioning

confidence: 99%

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Theta- and alpha-band EEG activity in response to eye gaze cues in early infancy

et al. 2015

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In order to elucidate the development of how infants use eye gaze as a referential cue, we investigated theta and alpha oscillations in response to object-directed and object-averted eye gaze in infants aged 2, 4, 5, and 9 months. At 2 months of age, no difference between conditions was found. In 4-and 9-month-olds, alpha-band activity desynchronized more in response to faces looking at objects compared to faces looking away from objects. Theta activity in 5-month-old infants differed between conditions with more theta synchronization for object-averted eye gaze. Whereas alpha desynchronization might reflect mechanisms of early social object learning, theta is proposed to imply activity in the executive attention network. The interplay between alpha-and theta activity represents developmental changes in both kinds of processes during early infancy.

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Section: Discussionmentioning

confidence: 99%

Section: Theta Activitymentioning

confidence: 99%

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Theta- and alpha-band EEG activity in response to eye gaze cues in early infancy

et al. 2015

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“…In a study where 11-moolds freely explored objects, modulations of theta activity [3-5 Hz in infants (25,26)], recorded over the frontal lobe during object exploration, predicted infants' subsequent recognition of these objects at test (26). The location of the recorded theta activity and its effect on learning in this study was consistent with the findings in the adult literature (22,24), suggesting that theta activity is associated with information encoding in infants, as it is in adults.…”

Section: Neural Signatures Of Information Expectationmentioning

confidence: 99%

“…For comparison, activity recorded in bilateral central and occipital recording sites was also entered into the analysis. Baseline corrected data were analyzed for amplitude in the 3-to 5-Hz theta frequency range (25,26) during the latter half of the Anticipation period. This analysis period was chosen based on adult findings showing a gradual increase in activity in anticipation of information (22) and visual inspection of timefrequency plots (Fig.…”

Section: Study 1: Theta Activity As a Marker Of Information Expectatimentioning

confidence: 99%

Infants’ preferences for native speakers are associated with an expectation of information

Begus

Gliga

Southgate

2016

Proc. Natl. Acad. Sci. U.S.A.

175

105

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Humans' preference for others who share our group membership is well documented, and this heightened valuation of in-group members seems to be rooted in early development. Before 12 mo of age, infants already show behavioral preferences for others who evidence cues to same-group membership such as race or native language, yet the function of this selectivity remains unclear. We examine one of these social biases, the preference for native speakers, and propose that this preference may result from infants' motivation to obtain information and the expectation that interactions with native speakers will provide better opportunities for learning. To investigate this hypothesis, we measured EEG theta activity, a neural rhythm shown to index active and selective preparation for encoding information in adults. In study 1, we established that 11-moold infants exhibit an increase in theta activation in situations when they can expect to receive information. We then used this neural measure of anticipatory theta activity to explore the expectations of 11-mo-olds when facing social partners who either speak the infants' native language or a foreign tongue (study 2). A larger increase in theta oscillations was observed when infants could expect to receive information from the native speaker, indicating that infants were preparing to learn information from the native speaker to a greater extent than from the foreign speaker. While previous research has demonstrated that infants prefer to interact with knowledgeable others, the current experiments provide evidence that such an information-seeking motive may also underpin infants' demonstrated preference for native speakers.social selectivity | infants | information seeking | theta oscillations | native speakers

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Parent‐delivered early intervention in infants at risk for ASD: Effects on electrophysiological and habituation measures of social attention

et al. 2017

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Prospective longitudinal studies of infants with older siblings with autism spectrum disorder (ASD) have indicated that differences in the neurocognitive systems underlying social attention may emerge prior to the child meeting ASD diagnostic criteria. Thus, targeting social attention with early intervention might have the potential to alter developmental trajectories for infants at high risk for ASD. Electrophysiological and habituation measures of social attention were collected at 6, 12, and 18 months in a group of high-risk infant siblings of children with ASD (N = 33). Between 9 and 11 months of age, infant siblings received a parent-delivered intervention, promoting first relationships (PFR), (n = 19) or on-going assessment without intervention (n = 14). PFR has been previously shown to increase parental responsivity to infant social communicative cues and infant contingent responding. Compared to infants who only received assessment and monitoring, infants who received the intervention showed improvements in neurocognitive metrics of social attention, as reflected in a greater reduction in habituation times to face versus object stimuli between 6 and 12 months, maintained at 18 months; a greater increase in frontal EEG theta power between 6 and 12 months; and a more comparable P400 response to faces and objects at 12 months. The high-risk infants who received the intervention showed a pattern of responses that appeared closer to the normative responses of two groups of age-matched low-risk control participants. Though replication is necessary, these results suggest that early parent-mediated intervention has the potential to impact the brain systems underpinning social attention in infants at familial risk for ASD.

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EEG theta rhythm in infants and preschool children

Cited by 197 publications

References 63 publications

Theta- and alpha-band EEG activity in response to eye gaze cues in early infancy

Theta- and alpha-band EEG activity in response to eye gaze cues in early infancy

Infants’ preferences for native speakers are associated with an expectation of information

Parent‐delivered early intervention in infants at risk for ASD: Effects on electrophysiological and habituation measures of social attention

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