Rats received a preexposure injection of one of three psychoactive compounds (physostigmine, naltrexone hydrochloride, naloxone methiodide) or saline, to determine whether a compound would interact with microwave irradiation to affect performance in the maze. The study was conducted as an attempt to confirm the results of a previous study (publication id 109).
|Exposure duration||45 min each on 10 testing days|
|Pulse width||2 µs|
|Packets per second||500|
Analyzes of error rates revealed no significant irradiation effect, no significant drug effect and no significant interaction between the two factors. There was a significant difference in test days with repeated test-trial days, which indicates that learning was accomplished. There was no significant interaction of test day and the other two main factors. The results of the analyzes of time it took each rat to enter all of the 12 baited arms included no significant exposure effect, a significant drug effect, a significant test day effect, and a significant interaction between drug and test day factors.
The authors concluded that there is no evidence from the current study that exposure to microwave irradiation under these parameters caused decrements in the ability of rats to learn the spatial memory task. These findings and those of other studies of possible working memory changes show differing results.