[Characteristics of the signal lag effect on crew--control center communications in the 520-day simulation experiment].

The 520-day experimental simulation of an exploration mission provided an opportunity to apply content analysis for studying the patterns of crew--Control center (CC) communication impeded by lag times. The period of high autonomy was featured by drastic reduction of the number of crew questions and requests which was judged as a marker of adaptation to the simulated space mission environment. The "key" events in the experiment changed the content of crew messages radically attesting to misperception of time, emotional involvement, want of CC feedback and draining out negative emotions. After the period of high autonomy with full loss of communication with controllers the traffic of crew messages onto the outside was noted to become very light which could also point to temporal changes in the communication style developed in the conditions of isolation and autonomous existence.