Coping with Antarctic demands: Psychological implications of isolation and confinement.

Working in extreme environments requires a wide range of cognitive, psychological and social competences. Antarctica represents one of the most challenging habitats to work in due to its aridity, extremely cold weather, and isolated conditions. This study aimed to assess mood variations and coping strategies, as well as their possible modulation by group dynamics in a crew at the Belgrano II Argentine Antarctic Station throughout 1 year of confinement. Thirteen members of the Argentine Army completed emotional, coping and social dynamics questionnaires bimonthly in March, May, July, September and November. Results showed a significant decline in social dynamics scales, evidenced by decreases in perceived peer and hierarchical support. Additionally, coping strategies displayed a drop in mature defence throughout the expedition. A positive correlation was found between social support and recovery from stress. Our results highlight the importance of interpersonal relationships in psychological adjustment to isolation and extreme environments.

Subjective time estimation in Antarctica: The impact of extreme environments and isolation on a time production task.

Interval timing measures time estimation in the seconds-to-minutes range. Antarctica provides a real-world context to study the effect of extreme photoperiods and isolation on time perception. The aim of this study was to explore interval timing as a cognitive measure in the crew of Belgrano II Argentine Antarctic Station. A total of 13 subjects were assessed for interval timing in short (3 s), intermediate (6 s) and long (12 s) duration stimuli. Measures were taken during the morning and evening, five times along the year. Significant variations were found for 3 s and 6 s during the morning and 6 s during the evening. Results suggest an impact of isolation on morning performances and an effect of the polar night on evening measures. These findings shed some light on the use of interval timing as a cognitive test to assess performance in extreme environments.

Sleep, napping and alertness during an overwintering mission at Belgrano II Argentine Antarctic station.

During Antarctic isolation personnel are exposed to extreme photoperiods. A frequent observation is a sleep onset phase delay during winter. It is not known if, as a result, daytime sleeping in the form of naps increases. We sought to assess sleep patterns - with focus on daytime sleeping - and alertness in a Latin American crew overwintering in Argentine Antarctic station Belgrano II. Measurements were collected in 13 males during March, May, July, September and November, and included actigraphy and psychomotor vigilance tasks. Sleep duration significantly decreased during winter. A total of eight participants took at least one weekly nap across all measurement points. During winter, the nap onset was delayed, its duration increased and its efficiency improved. We observed a significant effect of seasonality in the association of evening alertness with sleep onset. Our results replicate previous findings regarding sleep during overwintering in Antarctica, adding the description of the role of napping and the report of a possible modulatory effect of seasonality in the relation between sleep and alertness. Napping should be considered as an important factor in the scheduling of activities of multicultural crews that participate in Antarctica.

Comunicación temprana y vulnerabilidad social: estableciendo una agenda de investigación / Early communication and social vulnerability: setting a research agenda

El desarrollo de la comunicación durante la infancia involucra un sinnúmero de procesos ligados a aspectos tanto ambientales como individuales. Un componente central del desarrollo comunicativo temprano es la atención conjunta. Su definición varía según los autores, pero su concepción habitual plantea que es la coordinación visual de dos individuos hacia un objeto de interés mutuo. Este fenómeno incluye la adquisición de comportamientos como: el seguimiento de mirada, la referencia social, gestos y el monitoreo. Por otro lado, la vulnerabilidad social es un factor de riesgo estudiado en relación con numerosas variables como la memoria, las funciones ejecutivas y distintas patologías. Sin embargo, existe escasez en los estudios orientados a conocer la relación entre las habilidades comunicativas tempranas y la vulnerabilidad social. En este sentido, se vuelve interesante profundizar en temas relacionados con el desarrollo temprano de estas capacidades, relevar literatura y pensar programas que apunten a paliar los efectos de un ambiente social vulnerable.

The development of communication during infancy involves a wide range of processes related to either environmental or individual aspects. One of its most important components is joint attention. Although there are a variety of definitions depending on the authors, they all agree that joint attention is the visual coordination between two people forwards an object. This phenomenon includes the acquisition of some kinds of behaviors such as: gaze following, social reference, gestures and monitoring. On the other hand, social vulnerability is a risk factor studied in relation to different variables, for example memory, executive functions and mental pathologies. However, there is scarce literature concerning the relation between social vulnerability and early communicative development. Regarding this, it would be interesting to focus on these abilities, review some literature and think about possible future programs designed to prevent vulnerable environment effects.