How is a receptive field measured?
- Electrode recording while flashing stimuli and listening for spikes
- Weighing the brain after study
- Asking the animal to draw
What is a visual neuron's receptive field?
- The blood vessel feeding it
- The skull bone above it
- The exact visual pattern that excites the cell best
Each brain half views the opposite visual field.
Circle one: True False
How do simple and complex cortical cells differ?
- They respond to sound instead
- They sit in the retina
- Simple needs exact position; complex accepts the edge anywhere
Which axons cross at the optic chiasm?
- None of them cross
- Axons from nasal halves
- Only the color-carrying axons
The LGN stacks how many layers? Type the count.
Answer: ______________
A lesion wipes out the left visual pathway past the chiasm. What is lost?
- Smell on the left side
- Right field loss
- Hearing in the left ear
A student hunts V1 fields with tiny spots only. What is missing?
- Cortex prefers oriented bars
- Spots damage cortical cells
- Electrodes cannot record spots
From retinal dots to cortical edges W1-mt_wOc4YpkdYL-s1
- Electrode recording while flashing stimuli and listening for spikes · Recording spikes against changing stimuli maps the best pattern.
- The exact visual pattern that excites the cell best · The field is defined by the stimulus that fires the cell hardest.
- True · Crossing at the chiasm sends each side the opposite half of the world.
- Simple needs exact position; complex accepts the edge anywhere · Both want the right tilt, but only simple cells demand exact placement.
- Axons from nasal halves · Inner nasal halves cross while outer halves stay on their side.
- 6 · The relay holds six layers, keeping the two eyes separate.
- Right field loss · Each side carries the opposite field, so left damage blinds the right side.
- Cortex prefers oriented bars · Cortex moved past round fields: tilted edges drive it hardest.