From September 1960 until October 1962, Rogozov worked in Antarctica, including his role as the sole doctor in a team of thirteen researchers at the Novolazarevskaya Station, which was established in January 1961.
On the morning of 29 April 1961, Rogozov experienced general weakness, nausea, and moderate fever, and later pain in the lower right portion of the abdomen. All possible conservative treatment measures did not help. By 30 April signs of localized peritonitis became apparent, and his condition worsened considerably by the evening. Mirny, the nearest Soviet research station, was more than 1,600 km (1,000 mi) from Novolazarevskaya. Antarctic research stations of other countries did not have an aircraft. Severe blizzard conditions prevented aircraft landing in any case. Rogozov had no option but to perform the operation on himself.
The operation started at 02:00 local time on 1 May with the help of a driver and meteorologist, who were providing instruments and holding a mirror to observe areas not directly visible, while Rogozov was in a semi-reclining position, half-turned to his left side. A solution of 0.5% novocaine was used for local anesthesia of the abdominal wall. Rogozov made a 10–12 cm incision of the abdominal wall, and while opening the peritoneum he accidentally injured the cecum and had to suture it. Then he proceeded to expose the appendix. According to his report the appendix was found to have a dark stain at its base, and Rogozov estimated it would have burst within a day. The appendix was resected and antibiotics were applied directly into the peritoneal cavity. General weakness and nausea developed about 30–40 minutes after the start of the operation, so that short pauses for rest were repeatedly needed after that. By about 04:00 the operation was complete. (Wikipedia)
Ham was trained to work with operant conditioning, using a system that would send electric shocks to his feet when he made a mistake and reward him with a banana pellet if he did well.
During the flight, this system went haywire and sent electric shocks even though he was doing a great job at fullfilling his tasks. He was also exposed to almost 15 g’s of acceleration rather than the predicted 11g. Finally, the cabin lost pressure during flight, and reentry damaged the bottom of the craft which started taking in water after landing.
After his historical flight, Ham clearly wanted nothing to do with space anymore and started showing symptoms similar to PTSD. He was thus allowed to retire.