Podcast
Questions and Answers
What is the primary effect of selective adaptation on neurons responding to a specific visual feature?
What is the primary effect of selective adaptation on neurons responding to a specific visual feature?
- Enhanced ability to detect contrasting colors.
- Decreased firing rate over time. (correct)
- Permanent increase in the neuron's receptive field size.
- Increased sensitivity to all orientations.
In the context of selective adaptation, what does it mean for a neuron to 'fatigue'?
In the context of selective adaptation, what does it mean for a neuron to 'fatigue'?
- The neuron begins to respond to different types of stimuli.
- The neuron requires a stronger stimulus to produce the same level of response. (correct)
- The neuron permanently loses its ability to respond to any stimuli.
- The neuron's response becomes more rapid and intense.
What is the key finding in the classic experiment on selective adaptation to orientation?
What is the key finding in the classic experiment on selective adaptation to orientation?
- Detecting the adapted orientation requires more contrast after prolonged exposure. (correct)
- Selective adaptation equally affects all neurons in the visual cortex.
- Prolonged exposure to a specific orientation improves the ability to detect all orientations.
- The brain requires less contrast to detect the adapted orientation after exposure.
Why is the selective nature of adaptation important for understanding visual processing?
Why is the selective nature of adaptation important for understanding visual processing?
How does selective adaptation contribute to temporary changes in perception after prolonged screen use?
How does selective adaptation contribute to temporary changes in perception after prolonged screen use?
Which of the following is a direct consequence of the decreased firing rate of neurons due to selective adaptation?
Which of the following is a direct consequence of the decreased firing rate of neurons due to selective adaptation?
If someone is repeatedly exposed to a horizontal line pattern, what perceptual change is most likely to occur due to selective adaptation?
If someone is repeatedly exposed to a horizontal line pattern, what perceptual change is most likely to occur due to selective adaptation?
In the described adaptation experiment, what is measured both before and after exposure to the high-contrast pattern?
In the described adaptation experiment, what is measured both before and after exposure to the high-contrast pattern?
How does selective adaptation demonstrate the brain's efficiency in processing visual information?
How does selective adaptation demonstrate the brain's efficiency in processing visual information?
Suppose a person spends several hours working with intricate patterns. What is the expected outcome regarding their visual perception shortly after?
Suppose a person spends several hours working with intricate patterns. What is the expected outcome regarding their visual perception shortly after?
Flashcards
Selective Adaptation
Selective Adaptation
The process where the brain's neurons responding to specific visual features (like line orientation) become less sensitive after prolonged exposure.
Feature Detectors
Feature Detectors
Brain cells that respond most strongly to specific features of a stimulus, such as the orientation of a line.
Neuronal Fatigue
Neuronal Fatigue
After prolonged exposure, neurons fire less rapidly and respond less strongly when the same stimulus is presented again.
Orientation Adaptation Experiment
Orientation Adaptation Experiment
Signup and view all the flashcards
Real-world Adaptation
Real-world Adaptation
Signup and view all the flashcards
Selective Adaptation Specificity
Selective Adaptation Specificity
Signup and view all the flashcards
Study Notes
- Selective Adaptation to Orientation is how the visual system adapts to repeated stimuli.
How Selective Adaptation Works:
- Prolonged staring at a striped pattern of vertical lines can weaken how vertical patterns are perceived.
- Feature detectors are the neurons that respond to specific orientations and adapt.
- Neurons that respond to a particular feature, like vertical lines, fatigue after prolonged exposure.
- Neurons' firing rate decreases over time.
- When the same stimulus is presented again, the neurons respond less strongly.
- The diminished response makes it harder to perceive that orientation.
The Classic Experiment:
- A person's ability to detect different line orientations is tested.
- They are exposed to a high-contrast vertical pattern for a few minutes.
- The person's ability to detect vertical lines is re-tested.
- The brain now needs more contrast to see them clearly.
- The neurons responsible for vertical detection have adapted.
Why Selective Adaptation Matters:
- It helps to understand how brains adjust to repeated stimuli.
- Prolonged exposure to certain patterns can temporarily alter perception.
- Adaptation is selective, meaning only the neurons that were actively responding will adapt.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
