Figure 1.
The N170 Component Elicited by the Different Stimuli.
A. N170 amplitude at a left occipital-temporal electrode (PO7) in regular readers. B. N170 amplitude at a left occipital-temporal electrode (PO7) in dyslexic readers. C. N170 amplitude at a right occipital-temporal electrode (PO8) in regular readers. D. N170 amplitude at a right occipital-temporal electrode (PO8) in dyslexic readers. Continuous lines represent stimuli without diacritics and dashed lines represent stimuli with diacritics. Words are colored black, pseudowords red, and sequences of squares are in blue.
Figure 2.
Amplitudes Elicited by the Different Stimuli around 340(P3) and 400 ms (P4).
A. P3 and P4 amplitudes at a central-parietal electrode cluster (PO3, PO4 and POZ) in regular readers. B. P3 and P4 amplitudes at a central-parietal electrode cluster (PO3, PO4 and POZ) in dyslexic readers. Continuous lines represent stimuli without diacritics and dashed lines represent stimuli with diacritics. Words are colored black, pseudowords red, and sequences of squares are in blue.
Figure 3.
Scalp Topographies of the N170 Component and of the Amplitudes Elicited by the Different Stimuli around 340 (P3) and 400 (P4) ms.
Scalp topographies in response to the presentation of words, pseudowords (N170, P3 and P4) and squares (N170) with and without diacritics. Red represents positive electrophysiological activity and blue represents negative electrophysiological activity.
Table 1.
Mean Amplitudes Analyzed (in mV, Standard Deviations in Parentheses) at each Time-Window (in ms) in Regular (Reg) and Dyslexic (Dys) Readers.
Table 2.
Mean Latencies of the Amplitudes Analyzed at each Time Window (in ms, Standard Deviations in Parentheses) in Regular (Reg) and Dyslexic (Dys) Readers.
Table 3.
Mean Accuracy (in Percentages) and Reaction Times (RTs, in ms) of Regular and Dyslexic Readers in the Lexical Decision and the Visual Non-Orthographic Orientation Decision Tasks (Standard Deviations in Parentheses).