Frequency and response spectra of different types of olfactory receptor neuron encountered on the antennae of male Eriocrania semipurpurella
| . | Receptor neuron type . | . | . | . | . | . | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stimulus . | 1 . | 2 . | 3 . | 4 . | 5 . | No response . | |||||
| (Z)-4-hepten-2-one | 0 | 0 | 0 | 0 | 0 | 0 | |||||
| (R)-heptan-2-ol | 0 | 0 | +++++ | 0 | 0 | 0 | |||||
| (S)-heptan-2-ol | 0 | 0 | ++++ | 0 | 0 | 0 | |||||
| (R,Z)-4-hepten-2-ol | 0 | 0 | +++++ | 0 | 0 | 0 | |||||
| (S,Z)-4-hepten-2-ol | 0 | 0 | ++++ | 0 | 0 | 0 | |||||
| Nonan-2-one | 0 | 0 | 0 | +++ | + | 0 | |||||
| (Z)-6-nonen-2-one | 0 | 0 | 0 | ++++ | 0 | 0 | |||||
| (R,Z)-6-nonen-2-ol | +++++ | + | (+) | 0 | 0 | 0 | |||||
| (S,Z)-6-nonen-2-ol | ++ | ++++ | (+) | 0 | 0 | 0 | |||||
| Frequency | 37 | 25 | 8 | 12 | 5 | 52 | |||||
| . | Receptor neuron type . | . | . | . | . | . | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stimulus . | 1 . | 2 . | 3 . | 4 . | 5 . | No response . | |||||
| (Z)-4-hepten-2-one | 0 | 0 | 0 | 0 | 0 | 0 | |||||
| (R)-heptan-2-ol | 0 | 0 | +++++ | 0 | 0 | 0 | |||||
| (S)-heptan-2-ol | 0 | 0 | ++++ | 0 | 0 | 0 | |||||
| (R,Z)-4-hepten-2-ol | 0 | 0 | +++++ | 0 | 0 | 0 | |||||
| (S,Z)-4-hepten-2-ol | 0 | 0 | ++++ | 0 | 0 | 0 | |||||
| Nonan-2-one | 0 | 0 | 0 | +++ | + | 0 | |||||
| (Z)-6-nonen-2-one | 0 | 0 | 0 | ++++ | 0 | 0 | |||||
| (R,Z)-6-nonen-2-ol | +++++ | + | (+) | 0 | 0 | 0 | |||||
| (S,Z)-6-nonen-2-ol | ++ | ++++ | (+) | 0 | 0 | 0 | |||||
| Frequency | 37 | 25 | 8 | 12 | 5 | 52 | |||||
Receptor neuron sensitivity is defined by their approximate response thresholds to the stimuli (amounts in the stimulus pipettes): +++++, 10 pg;++++, 100 pg; +++, 1 ng; ++, 10 ng; +, 100 ng; (+), 100-1000 ng in some cases;0, no response.
Responses were characterized by an increase in action potentials. No response means a response not differing from the blank response, which was typically very low.