In several
fields of psychology, it has been shown that a participant’s background
emotional state influences how information is processed. Emotional state, also
referred to as mood, refers to a long-term psychological state. And some
studies event-related potential (ERP) studies have demonstrated that emotional
state immediately affects the processing of different linguistic mismatches
(e.g., semantic and syntactic mismatches) in sentences. Furthermore, mood has
been shown to impact discourse processing. In these studies, a strong
expectancy was evoked by a linguistic context.
In the present study, a strong expectancy was induced by a visual
(non-linguistic) context paired with a sentence. A spatial array was followed
by a sentence that matched (□○—The square stands in front of the circle)
or mismatched the picture (intra-dimensional mismatch: □○—The square stands
behind the circle; extra-dimensional mismatch: □○—The square stands
above the circle). The main question was whether mood effects on the
processing of visually induced expectancies were similar or different from mood
effects on the processing of linguistically induced expectancies. To this aim, the
authors presented conceptual (mis)matches that differed in saliency:
intra-dimensional vs. extra-dimensional mismatches which are both reported to
elicit an N2b/N400 (a negative slow wave that peaks at around 400 ms following
word onset) and P600 (a positive slow shift starting around 500 ms and
typically extending up to 800 ms after word onset), reflecting reanalysis. EEG
was recorded while participants read for comprehension. Mood (happy vs. sad)
was effectively induced by film clips. Neither for N2b/N400 nor for P600, an
interaction between mood and match was observed.
Thus, in contrast with studies investigating the effects of pure
linguistic mismatches (linguistic context paired with unexpected lexical item),
mood did not modulate the processing of conceptual mismatches. However, a main
effect of match revealed different ERP patterns for the two mismatches. While an
increase in N2b/ N400 occurred for the intra-dimensional and extra-dimensional
mismatches, a P600 only occurred to the extra-dimensional (more salient)
mismatches.
In conclusion, the effect of a happy mood versus a sad mood on
language processing of linguistic mismatches does not generalize to the
processing of conceptual mismatches. The finding can be taken as support that
being in an emotional state (positive or negative mood) influences processes of
reanalysis. That is, when being in an emotional state, a reanalysis
(monitoring) process is exclusively triggered by salient mismatches.
Article
by Randi I. Goertz, et al, from the Netherlands
and Belgium.
Full
access: http://mrw.so/1Sscep
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