Herman P M van Helden


Affiliation: TNO Prins Maurits Laboratory
Country: The Netherlands


  1. request reprint
    van Helden H, Trap H, Oostdijk J, Kuijpers W, Langenberg J, Benschop H. Long-term, low-level exposure of guinea pigs and marmosets to sarin vapor in air: lowest observable effect level. Toxicol Appl Pharmacol. 2003;189:170-9 pubmed
  2. request reprint
    van Helden H, Vanwersch R, Kuijpers W, Trap H, Philippens I, Benschop H. Low levels of sarin affect the EEG in marmoset monkeys: a pilot study. J Appl Toxicol. 2004;24:475-83 pubmed
    ..In conclusion, EEG abnormalities persisting for more than 1 year may occur in humans during long-term (5 h) exposure to subclinical levels of sarin that are not detectable by the currently fielded alarm systems. ..