Temporal integration in an anuran auditory nerve

Dunia, Richard; Narins, Peter M.

doi:10.1016/0378-5955(89)90048-8

Cited by 18 publications

(7 citation statements)

References 40 publications

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“…As reported previously (Dunia and Narins 1989b), threshold to CF was a function of stimulus duration. Response threshold increased with shortening of stimulus duration as shown in Fig.…”

Section: Resultssupporting

confidence: 76%

“…Before studying the gap detection and AM-rate coding properties of a fiber, the fiber's integration time (i.e., how response threshold to tone-pulses at fiber's CF changed with stimulus duration; Dunia and Narins 1989b), was determined. The response thresholds at different durations were subsequently used as the "reference thresholds" in experiments involving twin-pulse and PAM stimuli.…”

Section: Experimental Protocolsmentioning

confidence: 99%

See 1 more Smart Citation

Detection of gaps in sinusoids by frog auditory nerve fibers: importance in AM coding

1994

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Physiological studies were carried out in the frog (Rana pipiens pipiens) eighth nerve to determine: (i) whether the modulation rate or the silent gap was the salient feature that set the upper limit of time-locking to pulsed amplitude-modulated (PAM) stimuli, (ii) the gap detection capacity of individual eighth nerve fibers. Time-locked responses of 79 eighth nerve fibers to PAM stimuli (at the fiber's characteristic frequency) showed that the synchronization coefficient was a low-pass function of the modulation rate. In response to PAM stimuli having different pulse durations, a fiber gave rise to non-overlapping modulation transfer functions. The upper cut-off frequency of time locking was higher when tone-pulses in PAM stimuli had shorter duration. The fact that the cut-off frequency was different for the different PAM series suggested that the AM rate was neither the sole, nor the main, determinant for the decay in time-locking at high AM rates. Gap detection capacity was determined for 69 eighth nerve fibers by assessing fiber's spiking activities to paired tone-pulses during an OFF-window and an ON-window. It was found that the minimum detectable gap of eighth nerve fibers ranged from 0.5 to 10 ms with an average of 1.23-2.16 ms depending on the duration of paired tone pulses. For each fiber, the minimum detectable gap was longer when the duration of tone pulses comprising the twin-pulse stimuli was more than four times longer. When the synchronization coefficient was plotted against the silent gap between tones pulses in the PAM stimuli, the gap response functions of a fiber as derived from multiple PAM series were equivalent to gap response functions deriving from twin-pulse series suggesting that it was the silent gap which primarily determined the upper limit of time-locking to PAM stimuli.

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“…As reported previously (Dunia and Narins 1989b), threshold to CF was a function of stimulus duration. Response threshold increased with shortening of stimulus duration as shown in Fig.…”

Section: Resultssupporting

confidence: 76%

Section: Experimental Protocolsmentioning

confidence: 99%

Detection of gaps in sinusoids by frog auditory nerve fibers: importance in AM coding

1994

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show abstract

“…Such might be the case because of temporal integration of sound energy within the auditory system (Dunia and Narins, 1989;Ronacher et al, 2000;Recanzone and Sutter, 2008) or because longer signals simply offer more opportunities for detection (Viemeister and Wakefield, 1991). Consistent with expectations based on earlier work with these treefrogs, Schwartz and colleagues found that individual males in an artificial pond increased call duration and reduced call rate in response to elevations in the level of filtered background noise.…”

Section: Reduced Acoustic Interferencesupporting

confidence: 70%

Calling in gray treefrog choruses: modifications and mysteries

Bee

Schwartz²

2013

Proceedings of Meetings on Acoustics

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“…Fortunately, the situation is different at the level of single neurons, whose thresholds show striking similarities with detection thresholds (Kitzes et al, 1978;Fay and Coombs, 1983;Dunia and Narins, 1989;Viemeister et al, 1992;Clock Eddins et al, 1998;Neubauer, 2001, 2003). Heil and Neubauer have shown, for auditory-nerve fibers (ANFs) and cortical neurons, that a measure of threshold can be obtained from the stimulus-dependent timing of the first spike Neubauer, 2001, 2003;Heil, 2004;Neubauer and Heil, 2007).…”

Section: Introductionmentioning

confidence: 91%