NPB 102 Lecture 15: Lecture 15
1 Jun 2018
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Lecture 15
- Moth will turn and fly away if bat is far
- Moth will do evasive techniques such as drop suddenly if bat is nearby
Control of Moth behavior
- Firing rate of A1 is proportional to intensity of sound for moth
- Latency is affected by intensity
o Latency is Longer – intensity is low
o Latency is Shorter – intensity is high
- If bat comes on the left, then sound will reach the moth on the left A1 cell first, hen the
right A1 cell later
- A2 fires when sound is loud
Tuning Curve: Control of Cricket Flight Direction
- Silent – keeps flying straight forward
- 5kHz – turn towards the speaker, left antennae and left leg leans toward the speaker (left)
- 40kHz – turn away from the speaker, right antennae and right leg leans away from the
speaker (right)
- Good to see the behavior response that is tuned to specific frequencies
- Can make tuning curve
o How sensitive is the cricket is to specific sounds at different frequencies
o Visual representation of how the sensitivity to a stimulus type changes overa
range of stimulus values
▪ X axis – sound frequency (kHz)
▪ Y axis – intensity (dB)
- Low threshold is good = sensitivity is high
find more resources at oneclass.com
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Document Summary
Moth will turn and fly away if bat is far. Moth will do evasive techniques such as drop suddenly if bat is nearby. Firing rate of a1 is proportional to intensity of sound for moth. Latency is affected by intensity: latency is longer intensity is low, latency is shorter intensity is high. If bat comes on the left, then sound will reach the moth on the left a1 cell first, hen the right a1 cell later. 5khz turn towards the speaker, left antennae and left leg leans toward the speaker (left) 40khz turn away from the speaker, right antennae and right leg leans away from the speaker (right) Good to see the behavior response that is tuned to specific frequencies.
