Abstract：
:Event-related brain potentials (ERPs) were recorded while participants (n=13) were presented with mirrored and normal letters at different orientations and were asked to make mirror-normal letter discriminations. As it has been suggested that a mental rotation out of the plane might be necessary to decide on mirrored letters, we wanted to determine whether this rotation occurs after the plane rotation in mirror rotated letters. The results showed that mirrored letters in the upright position elicited a negative-going waveform over the right hemisphere in the 400-500 ms window. A similar negativity was also present in mirrored letters at 30 degrees, 60 degrees, and 90 degrees, but in these cases it was delayed. Moreover, the well-known orientation effect on the amplitude of the rotation-related negativity was also found, although it was more evident for normal than for mirrored letters. These results indicate that the processing of mirrored letters differs from that of normal letters, and suggest that a rotation out of the plane after the plane rotation may be involved in the processing of mirror rotated letters.
journal_name
Brain Cognjournal_title
Brain and cognitionauthors
Núñez-Peña MI,Aznar-Casanova JAdoi
10.1016/j.bandc.2008.07.003subject
Has Abstractpub_date
2009-02-01 00:00:00pages
180-7issue
1eissn
0278-2626issn
1090-2147pii
S0278-2626(08)00233-9journal_volume
69pub_type
杂志文章abstract：:The adolescent age period is often characterized as a health paradox because it is a time of extensive increases in physical and mental capabilities, yet overall mortality/morbidity rates increase significantly from childhood to adolescence, often due to preventable causes such as risk taking. Asynchrony in developmen...
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pub_type： 杂志文章
doi：10.1006/brcg.1993.1031
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pub_type： 临床试验,杂志文章
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pub_type： 杂志文章
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