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Attention and Cognitive Processes
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Attention and Cognitive Processes
Attention and Cognitive Processes
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1
Question
What is inattentional blindness?
Answer
Inattentional blindness is the failure to detect an unexpected stimulus when attention is otherwise engaged.
2
Question
What is change blindness?
Answer
Change blindness is the failure to detect a change in a stimulus, such as an object moving, appearing, or disappearing; involves memory (comparison of two scenes)
3
Question
How did William James define attention?
Answer
William James stated that attention is the taking possession by the mind, in clear vivid form, of one out of what seem several simultaneous possible objects or trains of thought; it implies withdrawal from some things in order to deal effectively with others.
4
Question
What is selective attention?
Answer
Selective attention is the ability to focus awareness on one stimulus, thought, or action while ignoring other irrelevant stimuli, thoughts, and/or actions.
5
Question
What is the 'spotlight' analogy related to selective attention?
Answer
Selective Attention is like a Spotlight that highlights certain stimuli while ignoring others.
6
Question
What are the two types of attention defined in the context of overt and covert attention?
Answer
Overt attention is conspicuous and involves orienting the body and sense organs toward a stimulus, while covert attention is inconspicuous and guides attention without external cues.
7
Question
What do Posner Cueing Tasks demonstrate?
Answer
Posner Cueing Tasks demonstrate that a cue directs covert attention while the eyes remain fixated at a focal point.
8
Question
What is the role of attention in modulating sensory signals?
Answer
Attention modulates the amplitude of EEG signals of stimuli and can modulate fMRI signals, as shown in Hopfinger et al., 2000.
9
Question
What are the two hypotheses regarding attention being a cause or an effect?
Answer
Attention as a cause is viewed as a causal agent that exerts its effects on the sensory side of processing, while attention as an effect refers to the functional consequences of circuits involved in value-based motor and non-motor decisions.
10
Question
What is the significance of the Cortical Salience Network?
Answer
The Cortical Salience Network is critical for monitoring and noting important changes and internal/external stimuli, automatically grasping attention based on salient stimuli.
11
Question
What is the difference between voluntary and reflexive attention?
Answer
Voluntary attention is a top-down, endogenous direction of attention, while reflexive attention is a bottom-up, exogenous reorienting of attention to specific aspects of unexpected objects or events.
12
Question
How does the time course of processing differ between voluntary and reflexive attention?
Answer
Voluntary attention has a slow onset and is maintained longer, whereas reflexive attention has a rapid shift that quickly fades.
13
Question
Which subcortical structures are involved in voluntary and reflexive attention?
Answer
Both voluntary and reflexive attention involve the superior colliculus and pulvinar.
14
Question
What are the key cortical regions associated with voluntary attention?
Answer
The key cortical regions associated with voluntary attention include the dorsal frontoparietal network.
15
Question
What is hemispatial neglect and what area of the brain is typically damaged?
Answer
Hemispatial neglect is a condition where patients are not conscious of the left side of space due to damage in the parietal lobe, typically on the right.
16
Question
What is Attention Deficit Hyperactivity Disorder (ADHD) characterized by?
Answer
ADHD is characterized by difficulty directing sustained attention to tasks or activities, impulsivity, reduced brain volume in areas such as the cerebellum and frontal lobe, and abnormal connectivity in brain regions.
17
Question
What are the components of Balint's Syndrome?
Answer
Balint's Syndrome involves extreme restriction of attention, oculomotor apraxia (difficulty steering visual gaze), optic ataxia (unable to reach for objects using visual guidance), and simultagnosia (extreme restriction of attention).