Week 2: Attention Flashcards
Attention
It is the mechanism that we use to select for further in-depth neural processing items that are of most interest to us.
Attention
Does not only select external sensory items of interest to receive further processing, but also internal thoughts and memories.
Train of Thought
Sequences of related thoughts or ideas.
Example: Thinking about your grocery list while planning your dinner menu
Attention Bias
A tendency to preferentially focus on certain types of stimuli.
Humans have a natural bias towards faces, especially emotional ones. This bias can be exaggerated in individuals with mental health conditions like anxiety and depression.
Negative Attentional Bias
The tendency to preferentially focus on negative information or stimuli while overlooking or downplaying positive or neutral information.
Cognitive bias that directs attention toward threats, errors, or negative outcomes.
What Grabs Our Attention?
1) Salient Stimuli (loud, bright, sudden) - helps us identify potential danger/threats
2) Novelty (new or unexpected) - we’re always curious and seeking new info
3) Motion (moving or changing objects)
Motion Transients
Visual changes that automatically draw our focus.
Exogenous Attention (bottom-up/automatic)
The automatic allocation of your attention based on the
properties of the stimuli themselves.
Endogenous Attention (top-down/intentional)
Not automatic, but instead is the allocation of
attention to items that you’ve chosen to pay attention to.
Preattentive Processing
The subconscious and automatic processing of information from the environment without conscious effort or attention.
Preattentive Processing
It’s the initial stage of perception where our brains rapidly take in sensory data and extract basic features like color, shape, orientation, and motion.
Pop Out Search (Feature Search)
The target differs from distractors by one fundamental dimension (i.e., colour, shape, size).
A search based on a single distinctive feature of the target
Conjunction Search (Serial Search)
The target shares features with distractors, requiring a more detailed search.
Set Size
The number of distractors in a visual search.
Parallel Search
A search process where multiple items can be processed simultaneously.
What happens to items we don’t pay attention to?
They are filtered out
Inattentional Blindness (Mack & Rock)
When we don’t pay attention, can be effectively blind even to salient visual stimuli.
Inattentional Blindness
The failure to notice a clearly visible object because attention is focused elsewhere.
Sustained Attention
Paying attention to the same item for a sustained period of time.
Tactile
Sense of touch
Right Parietal Cortex
Has a crucial role in sustaining attention across time.
Involved in spatial processing, alertness, distraction inhibition, and sensory integration.
Visual Spatial Neglect
The syndrome that results from right parietal damage.
Patients suffering from such neglect one whole side of the world and they act as if it no longer exists.
Attention and Awareness
If you lose the ability to pay attention you lose the ability to be aware of those things too.
Contralesional
Opposite side of the brain lesion