Academic integration: Going beyond disciplinary boundaries

Blaisdell, Muriel L.

doi:10.1002/tl.37219935408

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…This recovery itself helped prove that the shift was significant. When a BF shift was small and its significance was not obvious, a weighted average frequency (i.e., BF) was calculated for the summed responses to five consecutive frequency scans (Blaisdell 1993). Then the mean and standard deviation of these weighted averages were computed, and a two-tailed paired t-test was used to determine whether or not the weightedaverage frequencies obtained for control and stimulus conditions were significantly different for P Ͻ 0.05.…”

Section: Data Acquisition and Processingmentioning

confidence: 99%

Modulation of Responses and Frequency Tuning of Thalamic and Collicular Neurons by Cortical Activation in Mustached Bats

Zhang

Suga

2000

Journal of Neurophysiology

133

107

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In the Jamaican mustached bat, Pteronotus parnellii parnellii, one of the subdivisions of the primary auditory cortex is disproportionately large and over-represents sound at approximately 61 kHz. This area, called the Doppler-shifted constant frequency (DSCF) processing area, consists of neurons extremely sharply tuned to a sound at approximately 61 kHz. We found that a focal activation of the DSCF area evokes highly specific corticofugal modulation in the inferior colliculus and medial geniculate body. Namely a focal activation of cortical DSCF neurons tuned to, say, 61. 2 kHz with 0.2-ms-long, 100-nA electric pulses drastically increases the excitatory responses of thalamic and collicular neurons tuned to 61.2 kHz without shifting their best frequencies (BFs). However, it decreases the excitatory responses of subcortical neurons tuned to frequencies slightly higher or lower than 61.2 kHz and shifts their BFs away from 61.2 kHz. The BF shifts are symmetrical and centrifugal around 61.2 kHz. These corticofugal effects are larger on thalamic neurons than on collicular neurons. The cortical electrical stimulation sharpens the frequency-tuning curves of subcortical neurons. These corticofugal effects named "egocentric selection" last

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Section: Data Acquisition and Processingmentioning

confidence: 99%