Spectral selectivity of FM-FM neurons in the auditory cortex of the echolocating bat, Myotis lucifugus
| Autor: | Masao Maekawa, Donald Wong, William G. Paschal |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Physiology
Human echolocation Biology Auditory cortex Behavioral Neuroscience Chiroptera medicine Animals Neurons Afferent Electrodes Ecology Evolution Behavior and Systematics Auditory Cortex Neurons Pulse (signal processing) Anatomy Myotis lucifugus biology.organism_classification Electrophysiology Spectral sensitivity medicine.anatomical_structure Acoustic Stimulation Echolocation Animal Science and Zoology Neuron Cues Neuroscience Frequency modulation |
| Zdroj: | Journal of comparative physiology. A, Sensory, neural, and behavioral physiology. 171(4) |
| Popis: | 1. Spectral sensitivity was examined in delaysensitive neurons in the auditory cortex of the awake FM bat, Myotis lucifugus. FM stimuli sweeping 60 kHz downward in 4 ms were used as simulated pulse-echo pairs to measure delay-dependent responses. At each neuron's best delay, the pulse and/or echo were divided into 4 FM quarters (Ist, IInd, IIIrd, and IVth), each sweeping 15 kHz in 1 ms, and quarters essential for delay sensitivity were determined for both pulse and echo. 2. For the pulse, the IVth quarter was essential for delay sensitivity in the majority of neurons. For the echo, the essential quarter for most neurons was the IInd, IIIrd, or IVth. 3. Different quarters of the pulse and echo were essential for delay sensitivity in 68% of the neurons examined. 4. This study provides neurophysiological evidence linking both spectral and temporal processing in delaysensitive neurons of Myotis. Since spectral cues can provide target-shape information, sensitivity to both spectral and temporal parameters in single neurons may endow these neurons in FM bats with the potential for target analysis other than echo-ranging. |
| Databáze: | OpenAIRE |
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