Journal Alert - NEUROPSYCHOLOGIA

This study investigated the electrophysiological responses to > single-letter reading in children (reading-related potentials) and > explored the morphological differences between covert and overt reading > conditions. > Sixty-five healthy children (6-13 years) participated in this study. > Reading-related potentials were recorded during visual stimulation with > single Italian alphabetic letters. Stimuli were displayed for 5 ms > either automatically at a randomly uttered time lag or upon voluntary > self-paced button press by children. In the covert conditions, children > had to passively look at single letters, while in the overt conditions > children were required to read aloud the letters. Electromyographic > activity of the forearm and lips was additionally recorded during all > tasks. > Superimposition of reading-related potentials with the electromyographic > activity of forearm and lips during self-paced reading aloud allowed to > segregate the reading-related components into four periods: preparatory, > pre-lexical, lexical and post-lexical. Reading-related potentials of the > preparatory period can be related to preparation/intention to read, > those of the pre-lexical period to visual-perceptual processes, those of > the lexical period to the external/internal reafferent activity and > those of the post-lexical period to the feedback processes following > task completion. > Analysis of variance show...
Source: Intelligent Insights on Intelligence Theories and Tests (aka IQ's Corner) - Category: Neurologists Source Type: blogs