Kalevi Reinikainen

TL;DR: P Pitch deviance in a sequence of repetitive tone pips elicited magnetic evoked-response changes with a topography suggesting that a neuronal mismatch process to the deviant tones activates the primary auditory cortex.

TL;DR: Cerebral magnetic fields elicited by electrical stimulation of median and peroneal nerves are recorded, indicating that the deflections at 30-80 and 150-180 msec are due to activity at SI, whereas both ipsi- and contralateral stimuli elicit responses at SII.

TL;DR: The mismatch negativity (MMN) component of the event-related potentials (ERP) reflects the automatic detection of sound change and was elicited by a stimulus omission in a sequence of regularly spaced tone pips only when the SOA was shorter than 150 milliseconds.

TL;DR: In this article, the authors presented 30 msec sinusoidal tone bursts to the subject's left ear once every 1300 msec during reading a book, where the number of standard tones (1000 Hz) between deviants (1030 Hz) varied randomly from 3 to 15 (even distribution) so that the probability of the standards was 0.9 and that of the deviants 0.1.

TL;DR: The recorded ERP components suggest that the memory trace decays faster in the AD patients than in age-matched healthy controls, and this suggests that the neural basis of sensory memory in audition is impaired in AD.