TY - JOUR
T1 - Latency of evoked neuromagnetic M100 reflects perceptual and acoustic stimulus attributes
AU - Roberts, Timothy P.L.
AU - Ferrari, Paul
AU - Poeppel, David
PY - 1998/10/5
Y1 - 1998/10/5
N2 - The latency of components of the auditory evoked neuromagnetic field has been shown to reflect, or encode, stimulus attributes. In particular, the M100 component, occurring ~100 ms post stimulus onset has a latency that depends on stimulus pitch, spectral complexity and presentation level. This study used magnetoencephalography to record neuromagnetic fields evoked by presentation of two-tone complexes consisting of various proportions of 100 Hz and 1 kHz energy. These are perceived categorically, as evidenced by classification and reaction time measurements. It is found that the M100 latency also varies categorically, that is, characterized by two plateau regions with a sharp interface. Thus, we find that not only does the M100 latency reflect acoustic attributes of a stimulus, but also such perceptual characteristics.
AB - The latency of components of the auditory evoked neuromagnetic field has been shown to reflect, or encode, stimulus attributes. In particular, the M100 component, occurring ~100 ms post stimulus onset has a latency that depends on stimulus pitch, spectral complexity and presentation level. This study used magnetoencephalography to record neuromagnetic fields evoked by presentation of two-tone complexes consisting of various proportions of 100 Hz and 1 kHz energy. These are perceived categorically, as evidenced by classification and reaction time measurements. It is found that the M100 latency also varies categorically, that is, characterized by two plateau regions with a sharp interface. Thus, we find that not only does the M100 latency reflect acoustic attributes of a stimulus, but also such perceptual characteristics.
KW - Categorical perception
KW - Complex Tones
KW - M100
KW - Magnetoencephalography
KW - Temporal encoding
KW - Timing
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U2 - 10.1097/00001756-199810050-00024
DO - 10.1097/00001756-199810050-00024
M3 - Article
C2 - 9831462
AN - SCOPUS:0032487439
SN - 0959-4965
VL - 9
SP - 3265
EP - 3269
JO - NeuroReport
JF - NeuroReport
IS - 14
ER -