Seizures associated with intoxication and abuse of tramadol.

Purpose: To assess the frequency of seizures and patient characteristics associated with tramadol intoxication and abuse in young addicts.

Methods: Patients with history of tramadol abuse and intoxication were prospectively studied during a 3-year period. The characterstics of patients with seizures and those without seizures were compared.

[Topography and asymmetry of the visual response in electroencephalographic power spectra in healthy children].

In order to quantify the visual reactivity of EEG to opening the eyes, the topography of EEG power spectra in a sample of 72 healthy subjects aged from 7-15 years, was studied. The EEGs were recorder at 14 scalp sites under eyes closed (ECL) and eyes open (EOP). It has been established that the absolute powers in total and in alpha band were significantly higher in all derivations under ECL as compared with EOP condition.