Actionlet Ensemble [38] defines an actionlet as a particular conjunction of features for a subset of skeleton joints, indicating a structure of the features.
Accuracy of detecting a second target varied with the temporal proximity of two successive targets when subjects searched for a conjunction of features, but not a single feature.
Mode of stimulus-distribution (spatial versus temporal) and search type (target defined by a single feature or a conjunction of features) were manipulated in a 2×2 factorial design.
We used functional magnetic resonance imaging to explore the behavioural and neuroanatomical correlates of non-spatial search for a conjunction of features within a stream of temporally-distracting stimuli.
Children have difficulty with foraging for two target types, not only when they are defined by a conjunction of features but, unlike adults, also when they forage simultaneously for two target types that are distinguished from distractors by a single feature.
But when the target is defined by a conjunction of features, such as a green square embedded within a display of red squares and green discs, response times increase with the number of distractors (Treisman & Gelade, 1980; Kristjánsson, Wang, & Nakayama, 2002; Wolfe, 1998).
These experiments, and the associated computational and modeling approaches, by and large have converged on the notion that words can be represented by a conjunction of features, with each phoneme in a word contributing a set of features.
In conjunction search, targets are never defined by merely deviating in a single dimension: the conjunction of features – in this case, being red or green, and diamond-shaped – is crucial to the task.
Participants monitored a central stream of crosses for targets defined on the basis of either a single feature (color) or a conjunction of features (color and orientation) and were simultaneously presented with irrelevant auditory distractors.
In contrast, when the target was defined by a conjunction of features, and a salience-based search strategy was therefore not suitable, the presence of the singleton distractor had a static effect on RT, and proximity effects were no longer apparent.
