However, in the extended SERIOL model (Whitney & Cornelissen, 2005), the serial encoding of individual letters provides input to both the ventral (lexical) and dorsal (sub-lexical) routes. On the ventral route, the letters activate open-bigrams, which activate visual word forms. On the dorsal route, the letter sequence is parsed into a grapho-phonological representation. Thus the serial encoding provides a location-invariant encoding of individual letters, which of course provides suitable input for either route.
Despite the suitability of SERIOL’s representations for the demands of phonological processing, Goswami and Ziegler (2006) argued that “This solution ignores data showing that phonology affects the lexical route, such as body-neighborhood effects in lexical decision (Ziegler & Perry, 1998)”. It is unclear what they could mean by this statement.
- First, Whitney (2004) specifically discussed the data presented by Ziegler and Perry (1998), showing in detail how the SERIOL model explains their findings.
- Second, the general issue of interaction between the lexical and sub-lexical routes is orthogonal to the question of how letter order is encoded. Presumably, the lexical and sub-lexical routes converge onto the same lexical representations. Feedback from the lexical representations to letters and phonemes would then cause interaction between the routes. This connectivity pattern is independent of how letter position is encoded.