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Behavioral Psychology

Top-Down & Bottom-Up Attention

bottom-up and top-down attention, or stimulus-driven and goal-oriented attention (Carrasco,2011; Corbetta & Shulman, 2002; Desimone & Duncan, 1995; Kastner & Ungerleider, 2000). Top-down attention refers to the voluntary allocation of attention to certain features, objects, or regions in space. For instance, a subject can decide to attend to a small region of space in the …

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Change Blindness

Change blindness (aka. inattention blindness and selective attention) is a surprising perceptual phenomenon that occurs when a change in a visual stimulus is introduced and the observer does not notice it. For example, observers often fail to notice major differences introduced into an image while it flickers off and on again.