Early predispositions to preferentially orient toward cues associated with social partners have been documented in several vertebrate species including human neonates and domestic chicks. Human newborns at high familiar risk of Autism Spectrum Disorder (ASD) show differences their attention these predisposed stimuli, suggesting potential impairments the social-orienting mechanisms ASD. Using embryonic exposure valproic acid (VPA) we modeled ASD behavioral deficits To investigate animate...

Whether non-symbolic encoding of quantity is predisposed at birth with dedicated hard-wired neural circuits debated. Here we presented newly-hatched visually naive chicks stimuli (flashing dots) either identical or different numerousness (with a ratio 1:3) their continuous physical appearance (size, contour length, density, convex hull) randomly changing. Chicks spontaneously tell apart the on basis number elements. Upon presentation fixed changing showed expression early gene c-fos in...

Abstract Biological motion, the typical movement of vertebrates, is perceptually salient for many animal species. Newly hatched domestic chicks and human newborns show a spontaneous preference simple biological motion stimuli (point-light displays) at birth prior to any visual learning. Despite evidence such birth, neural studies performed so far have focused on specialized network involving primarily cortical areas. Here, we presented newly visually naïve either or rigid measured first time...

The ability to recognize animate agents based on their motion has been investigated in humans and animals alike. When the movements of multiple objects are interdependent, perceive presence social interactions goal-directed behaviours. Here, we how visually naive domestic chicks respond whose was reciprocally contingent space time (i.e. direction one object can be predicted from another object). We presented a ‘social aggregation’ stimulus, which three smaller discs repeatedly converged...

The idea that sensory stimulation to the embryo (in utero or in ovo) may be crucial for brain development is widespread. Unfortunately, up now evidence was only indirect because mapping of embryonic activity vivo challenging. Here, we applied first time manganese enhanced magnetic resonance imaging (MEMRI), a functional method, eggs domestic chicks. We revealed light-induced asymmetry by comparing were stimulated light maintained darkness. Our protocol paves way investigation effects variety...

Animals’ negotiations with the environment frequently involve quantitative assessments. However, it is largely unknown how different nervous systems can deal information about magnitude and perform operations on it. Here we review some of literature this topic discuss a few issues worthy debate that guide future research directions. First, present experimental evidence suggesting that, in addition to cortical (pallial) brain regions are widely acknowledged play role estimation, subcortical...

Paroxysmal EEG activity consists of groups two or more waves complexes which can be distinguished from the background by their form, amplitude, and sudden appearance. this type is frequently a manifestation abnormal synchronous neuronal discharge, may also occur in epilepsy. There no doubt that paroxysmal activated intravenously, intramuscularly, orally administered psychopharmaceutical agents. Long-term oral treatment usually required for these discharges to occur, with some psychoactive...

Domestic chicks (Gallus gallus domesticus) have been widely used as a model to study the motion cues that allow visually naïve organisms detect animate agents shortly after hatching/birth. Our previous work has shown prefer approach whose main body axis and direction are aligned (a feature typical of creatures is constrained by bilaterally symmetric plan). However, it never investigated whether also sensitive fact an agent maintains stable front-back orientation in (i.e. consistency which...

For inexperienced brains, some stimuli are more attractive than others. Human neonates and newly hatched chicks preferentially orient towards face-like stimuli, biological motion, objects changing speed. In chicks, this enhances exposure to social partners, subsequent attachment trough filial imprinting. Early preferences not steady. instance, preference for speed fades away after 2 days in chicks. To understand the physiological mechanisms underlying these transient responses, we tested...

The discovery of the role light exposure for development lateralization in domestic chick embryos revolutionized this research field. However, two main issues remain unresolved: (i) while chicks anatomical light-dependent is mostly confined to thalamofugal visual pathway, pigeons only tectofugal pathway lateralized after exposure. no study either species ever investigated entopallium, forebrain station pathway. (ii) It now known that can be observed also dark-incubated chicks, both at...

Filial imprinting, a crucial ethological paradigm, provides insights into the neurobiology of early learning and its long-term impact on behaviour. To date, only invasive techniques, such as autoradiography or lesion, have been employed to understand this The primary limitation these methods lies in their constrained access entire brain, impeding exploration brain networks at various stages paradigm. Recently, advances functional magnetic resonance imaging (fMRI) avian opened new windows...

Abstract Whether non-symbolic encoding of quantity is predisposed at birth with dedicated hard-wired neural circuits debated. Here we presented newly-hatched visually naive chicks stimuli (flashing dots) either identical or different numerousness (with a ratio 1:3) their continuous physical appearance (size, contour length, density, convex hull) randomly changing. Chicks spontaneously tell apart the on basis number elements. Upon presentation fixed changing also showed expression early gene...

Summary For inexperienced brains, some stimuli are more attractive than others. Human neonates and newly-hatched chicks preferentially orient towards face-like stimuli, biological motion, objects changing speed. In chicks, this enhances exposure to social partners, subsequent attachment trough filial imprinting. Early preferences not steady. The preference for speed fades away after three days in chicks. To understand the physiological mechanisms underlying these transient responses, we...

Abstract Predispositions to preferentially orient towards cues associated with social partners, such as face-like stimuli or biological and animate motion, appear guide behavior from the onset of life. These predispositions have been documented in several vertebrate species including human neonates, young monkeys newly-hatched domestic chicks. Human newborns at high familiar risk Autism Spectrum Disorder (ASD) show a remarkable deficit their attention toward these predisposed stimuli, either...

Filial imprinting, a crucial ethological paradigm, provides insights into the neurobiology of early learning and its long-term impact on behaviour. To date, invasive techniques like autoradiography or lesions have been used to study it, limiting exploration whole brain networks. Recent advances in fMRI for avian brains now open new windows explore bird's functions at network level. We developed an technique awake, newly hatched chicks, capturing BOLD signal changes during imprinting...