Working together to orient faster: The combined effects of alerting and orienting networks on pupillary responses at 8 months of age

Pérez, David López; Ramotowska, Sonia; Malinowska-Korczak, Anna; Haman, Maciej; Tomalski, Przemysław

doi:10.1016/j.dcn.2020.100763

Cited by 4 publications

(1 citation statement)

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“…Our findings showed improved task-relevant performance (i.e., visual orienting to the face) with higher phasic arousal level. This supports previous work in infants 36 and adults 37 , 38 , and extends these findings to sound-induced alertness in relation to social orienting at a younger age. We interpret our findings in relation to the adaptive gain theory on the association between arousal and attention 1 , according to which phasic LC activity increases the gain of task-relevant inputs over noise, promoting exploitation of the current focus of attention over exploration of the environment.…”

Section: Discussionsupporting

confidence: 91%

Manipulation of phasic arousal by auditory cues is associated with subsequent changes in visual orienting to faces in infancy

Bussu,

Portugal,

Wilsson

et al. 2023

Sci Rep

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This eye-tracking study investigated the effect of sound-induced arousal on social orienting under different auditory cue conditions in 5-month-old (n = 25; n = 13 males) and 10-month-old infants (n = 21; n = 14 males) participating in a spontaneous visual search task. Results showed: (1) larger pupil dilation discriminating between high and low volume (b = 0.02, p = 0.007), but not between social and non-social sounds (b = 0.004, p = 0.64); (2) faster visual orienting (b = − 0.09, p < 0.001) and better social orienting at older age (b = 0.94, p < 0.001); (3) a fast habituation effect on social orienting after high-volume sounds (χ2(2) = 7.39, p = 0.025); (4) a quadratic association between baseline pupil size and target selection (b = − 1.0, SE = 0.5, χ2(1) = 4.04, p = 0.045); (5) a positive linear association between pupil dilation and social orienting (b = 0.09, p = 0.039). Findings support adaptive gain theories of arousal, extending the link between phasic pupil dilation and task performance to spontaneous social orienting in infancy.

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