Author response: Translational control of auditory imprinting and structural plasticity by eIF2α

Batista, Gervasio; Johnson, Jennifer L.; Dominguez, Elena; Costa-Mattioli, Mauro; Peña, José Luis

doi:10.7554/elife.17197.025

Cited by 1 publication

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“…However, in non-imprinted chicks whose sensitive period is ended, administration of exogenous T3 allows imprinting to occur, re-opening the sensitive period for memory formation (Yamaguchi et al, 2012) and the associated preference to biological motion . Re-opening of sensitive periods by pharmacological agents has been discovered for phenomena other than imprinting (see also Batista et al, 2016Batista et al, , 2018, such as ocular dominance in mammals (Hensch & Quinlan, 2018) and absolute pitch in humans (Gervain et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Resurgence of a perinatal attraction for animate objects via thyroid hormone T₃

Lorenzi

Lemaire

Versace

et al. 2020

Preprint

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SummaryFor inexperienced brains, some stimuli are more attractive than others. Human neonates and newly-hatched chicks preferentially orient towards face-like stimuli, biological motion, and objects changing speed. In chicks, this enhances exposure to social partners, and subsequent attachment trough filial imprinting. Early preferences are not steady. The preference for stimuli changing speed fades away after three days in chicks. To understand the physiological mechanisms underlying these transient responses, we tested whether the early preferences for objects changing speed can be promoted by thyroid hormone 3,5,3’-triiodothyronine (T3). This hormone determines the start of imprinting’s sensitive period. We found that the preference for objects changing speed can be re-established in female chicks treated with T3. Moreover, day-one chicks treated with an inhibitor of endogenous T3 did not show any preference. These results suggest that the time windows of early predispositions and of high plasticity are controlled by the same molecular mechanisms.

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