16 Questions
Why do we have a selective sensory system according to the passage?
To conserve energy for more complex tasks
What evolutionary advantage does a selective sensory system provide?
Conservation of energy
What are the limitations of our sensation based on?
Types of energy we can sense
What restricts the elements of energy we can sense?
Biological factors
What is the absolute threshold?
The minimum intensity of a stimulus that can be reliably detected over 50% of the time
What method is used to measure absolute thresholds?
Constant stimuli method
What is considered subliminal based on the passage?
Information that falls below the absolute threshold
How does Weber's law determine perceptible differences in sensation?
By establishing the ratio of stimulus intensity to Just Perceptible Difference (JPD)
What does the constant 'K' represent in the context of JND for weight perception?
The minimum weight difference needed for perception
Which type of scale is most of our sensory experiences based on?
Logarithmic scale
What kind of mapping does our subjective experience of changing stimuli have with the external environmental reality?
Non-linear mapping
What determines perceptible differences in sensation according to the passage?
Weber's law
What type of threshold is based on the smallest intensity of a stimulus that can be detected?
Absolute threshold
What is the main purpose of our sensory system, as described in the passage?
To filter out irrelevant internal and external events
According to the passage, what role does attention play in our sensory system?
Attention can be consciously directed if needed
What does the passage suggest about sensation as the starting point of our sensory experience?
Sensation isn’t the starting point of our sensory experience
Test your knowledge on the active process of representing some aspects of the internal and external environment using selective sensory systems. Explore how this process frees up energy for other important tasks and why we don't need to know everything.
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