Supplemental data for  Thalamic Gating of Auditory Responses in Telencephalic Song Control Nuclei

Coleman, Melissa J.

Mooney, Richard

Roy, Arani

Wild, J. Martin

English

Scholarship@Claremont

  Supplementary Figure 1. Spontaneous activity in simultaneously recorded Uva and HVC.  A. Top, Spontaneous multiunit activity in HVC. Bottom, Simultaneously recorded multiunit activity in Uva. B. Expanded view of the boxed section in A.  Schematic of Uva recording sites (x) that had simultaneous bursts of activity with HVC.      Supplementary Figure 2. Effect of Uva stimulation frequency on PSP amplitude in an HVC neuron. A. Uva was stimulated at 2, 10 and 20 Hz and the responding EPSPs were recorded in an HVC neuron.  Scale bar = 500 msec for 2 Hz and 250 msec for 10 & 20 Hz.  Tonic hyperpolarizing current (–0.4 nA) was injected into the neuron throughout the recording.  B. Normalized EPSP amplitude of the first 10 PSPs for 2 Hz (black boxes, n = 4 neurons), 10 Hz (grey circles, n = 4 neurons) and 20 Hz (white triangles, n = 2 neurons) Uva stimulation.  EPSP amplitudes were normalized to the amplitude of the EPSP evoked after the first Uva stimulation.  There was no difference in EPSP amplitudes at 2 Hz stimulation (repeated measures ANOVA, p = 0.279).  At 10 and 20 Hz, there was no change in EPSP amplitude after the 3rd Uva stimulus (ANCOVA, p = 0.791 at 10 Hz, p = 0.061 at 20 Hz).  At 10 Hz Uva stimulation, there was an average -0.189 mV change in amplitude for every stimulus, after the 3rd stimulation.  There was a significant difference in the EPSP amplitude between 1st and 2nd Uva stimulus (repeated measures ANOVA, p < 0.05).  At 20 Hz Uva stimulation, after the 3rd stimulation there was an average -0.224 mV change in EPSP amplitude for every stimulus.  There was a significant difference in EPSP amplitude between the 1st and 2nd Uva stimulus (repeated measures ANOVA, p < 0.05).    

Supplementary Figure 1

Keck Graduate Institute

 
 
Supplementary Figure 1. Spontaneous activity in simultaneously recorded Uva and 
HVC.  A. Top, Spontaneous multiunit activity in HVC. Bottom, Simultaneously recorded 
multiunit activity in Uva. B. Expanded view of the boxed section in A.  Schematic of Uva 
recording sites (x) that had simultaneous bursts of activity with HVC. 
 
 
 
 
 
Supplementary Figure 2. Effect of Uva stimulation frequency on PSP amplitude in an 
HVC neuron. A. Uva was stimulated at 2, 10 and 20 Hz and the responding EPSPs were 
recorded in an HVC neuron.  Scale bar = 500 msec for 2 Hz and 250 msec for 10 & 20 
Hz.  Tonic hyperpolarizing current (–0.4 nA) was injected into the neuron throughout the 
recording.  B. Normalized EPSP amplitude of the first 10 PSPs for 2 Hz (black boxes, n = 
4 neurons), 10 Hz (grey circles, n = 4 neurons) and 20 Hz (white triangles, n = 2 neurons) 
Uva stimulation.  EPSP amplitudes were normalized to the amplitude of the EPSP evoked 
after the first Uva stimulation.  There was no difference in EPSP amplitudes at 2 Hz 
stimulation (repeated measures ANOVA, p = 0.279).  At 10 and 20 Hz, there was no 
change in EPSP amplitude after the 3rd Uva stimulus (ANCOVA, p = 0.791 at 10 Hz, p = 
0.061 at 20 Hz).  At 10 Hz Uva stimulation, there was an average -0.189 mV change in 
amplitude for every stimulus, after the 3rd stimulation.  There was a significant difference 
in the EPSP amplitude between 1st and 2nd Uva stimulus (repeated measures ANOVA, p 
< 0.05).  At 20 Hz Uva stimulation, after the 3rd stimulation there was an average -0.224 
mV change in EPSP amplitude for every stimulus.  There was a significant difference in 
EPSP amplitude between the 1st and 2nd Uva stimulus (repeated measures ANOVA, p < 
0.05).   
 


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