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Fig. 2. Graphical representation of analysis of data in
Table 1. The response to each
test odour following pre-stimulation was compared with the control level using
t-tests and Bonferroni's correction for multiple comparisons (see
text for details). Responses that were significantly different from control
levels are indicated in colour. Red indicates that the response was
significantly weaker than control levels of attraction but was still
attractive. Purple indicates that the mean response was not significantly
different from zero, as tested by a one-sample t-test, and is
therefore described as `indifferent'. Blue indicates that the repulsive
response was significantly different from zero. A blank rectangle indicates
that the response was not significantly different from the control levels.
Control responses were all tested using one-sample t-tests and are
indicated as being significantly attractive (red), not significantly different
from zero (i.e. indifferent - purple) or significantly repulsive (blue). The
reciprocal crosses between butyl, pentyl and hexyl acetate, discussed in
detail in the text, are highlighted with a broken box.
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