Abstract
Mismatch field (MMF) is an early magnetoencephalographic response evoked by deviant stimuli within a sequence of standard stimuli. Although auditory MMF is reported to be an automatic response, the automaticity of visual MMF has not been clearly demonstrated, partly because of the difficulty in designing an ignore condition. Our modified oddball paradigm had a masking stimulus inserted between briefly presented standard and deviant stimuli (vertical gratings with different spatial frequencies). Perceptual discrimination between masked standard and deviant stimuli was difficult, but the early magnetoencephalographic response for the deviant was significantly larger than that for the standard, when the former had a higher spatial frequency than the latter. Our findings strongly support the hypothesis that visual MMF is evoked automatically.
| Original language | English |
|---|---|
| Pages (from-to) | 535-538 |
| Number of pages | 4 |
| Journal | NeuroReport |
| Volume | 22 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2011 Aug 3 |
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Keywords
- automaticity
- magnetoencephalography
- masking
- subconscious processing
- visual mismatch negativity
ASJC Scopus subject areas
- Neuroscience(all)
Cite this
Visual mismatch response evoked by a perceptually indistinguishable oddball. / Kogai, Takayoshi; Aoyama, Atsushi; Amano, Kaoru; Takeda, Tsunehiro.
In: NeuroReport, Vol. 22, No. 11, 03.08.2011, p. 535-538.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Visual mismatch response evoked by a perceptually indistinguishable oddball
AU - Kogai, Takayoshi
AU - Aoyama, Atsushi
AU - Amano, Kaoru
AU - Takeda, Tsunehiro
PY - 2011/8/3
Y1 - 2011/8/3
N2 - Mismatch field (MMF) is an early magnetoencephalographic response evoked by deviant stimuli within a sequence of standard stimuli. Although auditory MMF is reported to be an automatic response, the automaticity of visual MMF has not been clearly demonstrated, partly because of the difficulty in designing an ignore condition. Our modified oddball paradigm had a masking stimulus inserted between briefly presented standard and deviant stimuli (vertical gratings with different spatial frequencies). Perceptual discrimination between masked standard and deviant stimuli was difficult, but the early magnetoencephalographic response for the deviant was significantly larger than that for the standard, when the former had a higher spatial frequency than the latter. Our findings strongly support the hypothesis that visual MMF is evoked automatically.
AB - Mismatch field (MMF) is an early magnetoencephalographic response evoked by deviant stimuli within a sequence of standard stimuli. Although auditory MMF is reported to be an automatic response, the automaticity of visual MMF has not been clearly demonstrated, partly because of the difficulty in designing an ignore condition. Our modified oddball paradigm had a masking stimulus inserted between briefly presented standard and deviant stimuli (vertical gratings with different spatial frequencies). Perceptual discrimination between masked standard and deviant stimuli was difficult, but the early magnetoencephalographic response for the deviant was significantly larger than that for the standard, when the former had a higher spatial frequency than the latter. Our findings strongly support the hypothesis that visual MMF is evoked automatically.
KW - automaticity
KW - magnetoencephalography
KW - masking
KW - subconscious processing
KW - visual mismatch negativity
UR - http://www.scopus.com/inward/record.url?scp=79960330440&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79960330440&partnerID=8YFLogxK
U2 - 10.1097/WNR.0b013e328348ab76
DO - 10.1097/WNR.0b013e328348ab76
M3 - Article
C2 - 21847819
AN - SCOPUS:79960330440
VL - 22
SP - 535
EP - 538
JO - NeuroReport
JF - NeuroReport
SN - 0959-4965
IS - 11
ER -