The most direct way to test this would be to induce anoxia experimentally and ask the subject what it feels like.
Next, she takes up the ever popular " cerebral anoxia " argument.
anoxia cannot be responsible.
inadvertent injection of drugs into the arterial circulation may result in vascular spasm with loss of tissue due to anoxia.
In order to avoid anoxia (oxygen starvation ), it is vitally important that the pond is adequately oxygenated at all times.