CH. 4 CP

Attention in Everyday Life:
- Example of a rainy day in Barcelona: Movement and color (umbrellas) and their influence on attention.
- Attention determines what we experience and take away from events.
Key Concepts in Attention:
- Attention as Information Processing
- Models of Attention:
  - Broadbent's Filter Model
  - Modified Models: Early and Late Selection Models
  - Processing Capacity and Perceptual Load
Demonstration of Attention:
- Stroop Effect: Illustrates how conflicting stimuli impact attention.
Areas of Focus:
- Scanning Scenes with Eye Movements:
  - Influence of Stimulus Salience
  - Cognitive Factors Affecting Scanning
  - Task Demands and Outcomes of Attention
- Attention's Impact:
  - Response to Locations and Objects
  - Perception and Physiological Responses
  - Changes in Brain Representation through Attention
Divided Attention:
- Achieved through Practice with Automatic Processing.
- Difficult when tasks are hard or distracting.
Distractions:
- Effects of cell phone usage while driving
- Internet distractions and experience sampling methods
Consequences of Inattention:
- Phenomena of Inattentional Blindness and Change Detection.
- Examples from everyday experience and feature integration theory.

Core Questions Addressed:
- Can we focus on one thing despite distractions?
- Conditions for attending to multiple things simultaneously.
- Impact of cell phone usage while driving on attention.
Scenario Application:
- Roger's experience in the library illustrates different attention types:
  - Selective Attention - Focused on math
  - Distraction - Annoyed by nearby conversations
  - Divided Attention - Eavesdropping while gaming
  - Attentional Capture and Visual Scanning - Responding to a commotion.
Attention as Information Processing:
- William James's definition of attention, emphasizing withdrawal from certain stimuli.
- Early attention research relevance to cognitive psychology establishment.

Broadbent's Filter Model:
- Designed to explain selective attention through dichotic listening.
- Stages:
  - Sensory Memory: Holds incoming info briefly.
  - Filter: Selectively allows attended messages through
  - Detector: Processes attended messages to gather meaningful content.
  - Short-Term and Long-Term Memory Effects.
Modifications to Broadbent's Model:
- Recognition of unattended information processing.
- Example studies: Neville Moray's name recognition and the "Dear Aunt Jane" experiment.
Attenuation Model (Treisman):
- Introduces the idea of analyzing messages through physical characteristics, language, and meaning.
- Suggests a 'leaky filter' where some unattended information gets processed.

Late Selection Model:
- Proposes that selection occurs based on meaning after initial processing.
- Example of ambiguous sentences affecting perception based on biasing words.
Processing Capacity:
- Defined by Lavie's concepts of perceptual load.
- Experiments show that less cognitive load leads to greater distraction.
The Stroop Effect:
- Illustrates how automatic processing can conflict with tasks requiring attention.

Visual Attention Influences:
- Central vs. Peripheral Vision distinction.
- Eye Movements: Fixation and Saccadic movements for scanning scenes.
Stimulus Salience:
- Bottom-up processes based on physical characteristics.
- Top-down effects influenced by knowledge and expectations.
Task-Demand Influences:
- Studies demonstrating that attention can be affected by current tasks (e.g., making a sandwich).

Covert Attention:
- Impacts on processing at locations or objects without eye movement.
- Precueing experiment showed faster responses when focus is directed to expected locations.
Attention to Objects:
- Same-object advantage - enhancement spreads to nearby locations.
- Attended objects perceived as more vivid and clear is supported by various studies.

Divided Attention:
- Possible with practiced tasks but becomes difficult with higher-load tasks.
- Examples of mental resources allocation.
- Research linking cognitive load to distracted driving.
Effect of Internet and Cell Phones:
- High cell phone use while studying leads to lower academic performance.
- Experience sampling showing real-world frequency of distractions.

Mind Wandering:
- Common and affects task performance.
- Engaged with the default mode network during unrehearsed tasks.
Inattentional Blindness:
- Failure to notice visible stimuli not being directly attended.
- Examples using visual stimuli and dynamic scenes.

Change Detection Method:
- Demonstration of difficulty in detecting changes in stimuli.
- Notable instances of change blindness support lack of focused attention.

Binding Problem:
- Feature integration necessary for coherent perceptions of objects.
- Two stages of processing:
  - Preattentive Stage: Independent feature analysis.
  - Focused Attention Stage: Features combined into coherent perception.
Illusory Conjunctions:
- Evidence of attention's role in binding, shown through experiments.
- Examples linking feature analysis to perception challenges.

Attention Networks:
- Dorsal and Ventral Attention Networks.
- Role of Executive Attention in managing conflicting responses.
Synchronization in Attention:
- Enhanced signal transmission during focused attention.
- Changing effective connectivity essential for managing cognitive load.

Final Thoughts on Attention:
- Attention is a valuable cognitive resource with limits.
- Importance in perception and the necessity of understanding mental functions.
- Next steps: transitioning to memory, illustrating relationship to features of attention.