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Abstract:
Repetition Blindness (RB) is the difficulty in perceiving
both occurrences of two visual events when they are rapidly and
sequentially displayed. RB is undiminished for words of different
case (hand HAND), meaning it likely occurs after abstract letter
identity has been computed. Because RB occurs for words sharing any
subset of their letters (e.g., aware WARM), RB between
orthographically similar words could be a tool for investigating
sublexical representations. Prior studies of RB in words have all
used central presentation. We displayed identical words (hand HAND)
or similar words (chance hand) at durations of 75 ms per word
(followed by a 30 ms mask of ampersands) centrally or to the right
visual field (rvf-LH) or left visual field (lvf-RH). Less identity
RB was found for the lvf-RH. This is consistent with the proposal
that the RH has less robust word nodes than the LH. The hemifields
also differed in amount of RB for different types of orthographic
relatedness, with the rvf-LH showing less RB for orthographic
neighbors (hard HAND) than for words with non-aligned letters
(chance HAND). This difference could be due to phonological priming
between neighbors in the LH. Alternatively, RB in the RH may
require letter-position identity. An unexpected finding was that
the pattern of RB for central presentation was different from the
pattern for lateralized presentation: more identity RB than in
either visual field, but less similarity RB than in either visual
field
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