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| Selecting certain stimuli from among many and focusing cognitive resources on those selected. Allows us to focus on what is important at the moment and to ignore the rest. |
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*Failure to so perceive an object that is not attended*
When attention is directed elsewhere, a driver can miss an object right before his eyes, even when the object is directly fixated on the visual system. |
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| Refers to the ability to perceive a particular stimulus of interest while ignoring numerous other stimuli. |
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| 2+ stimuli share cognitive resources. |
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| Participant repeats aloud the stimuli presented to the attended channel and ignores the stimuli presented in the unattended channel. |
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| An attentional filter that operates after sensory processing but prior to meaningful semantic processing. |
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| Attentional filter that lowers the strength of the sensory signal. (Triesman) |
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| Attentional filter that operates after meaningful semantic processing but prior to response preparation. |
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| Attention is limited in overall capacity and that our ability to carry out simultaneous tasks depends, in part on how much capacity the tasks require. Selective attention occurs because shadowing demands most of the capacity, leaving little, if any, for the unattended channel. |
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Definition
| The ability to perform two tasks concurrently depends not just on their respective demands on capacity but also on the specific kinds of resources required. |
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| necessity of selecting responses in dual-task situations in series rather than in parallel and implies that response time to a second task is slowed by response selection in the first task. |
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| Aligns attention with a signal in the visual field, either overtly through eye movements or covertly without any eye movement. |
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| Patients ignore stimuli in the visual space opposite to their brain lesion. |
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| Increases sensitivity to incoming stimuli and maintains this state of readiness. |
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| A network that monitors for conflicts among thoughts, feelings, and responses and resolves such conflicts by inhibiting inappropriate mental representations and activating appropriate ones. |
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Term
| Feature Integration Theory |
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Definition
| Automatic preattentive processing of features must be followed by controlled attentional processing to bind the features into a whole object. |
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| How the features that are distributed in multiple brain regions are integrated to result in the perception of a single object. Attention may be what binds the features together prior to conscious perception. |
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| Interval of time after the target is presented when other stimuli in the series are not perceived. This interval seems to be a refractory period following the encoding of the first stimulus that prevents attending to the second stimulus. |
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| Unconscious perception without attention. |
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