Table 2 Functional properties of excitatory and inhibitory synaptic STRFs.

From: Stimulus dependent transformations between synaptic and spiking receptive fields in auditory cortex

STRF properties

Excitation (mean ± s.d.)

Inhibition (mean ± s.d.)

Comparison with CCa (mean ± s.d.)

p-value

Bandwidth [all bands] (octaves)

0.65 ± 0.30 (n = 27)

0.89 ± 0.34 (n = 12)

 

0.0496*

0.65 ± 0.30 (n = 27)

 

0.64 ± 0.37 (n = 40)b

0.8738

 

0.89 ± 0.34 (n = 12)

0.64 ± 0.37 (n = 40)b

0.0399*

Latency (ms)

35.2 ± 10.9 (n = 27)

43.5 ± 14.8 (n = 12)

 

0.0971

Duration (ms)

41.5 ± 16.9 (n = 27)

45.6 ± 29.0 (n = 12)

 

0.6591

bTMF (cyc/s)

11.2 ± 6.0 (n = 27)

12.0 ± 6.9 (n = 12)

 

0.7132

11.2 ± 6.0 (n = 27)

 

6.35 ± 4.50 (n = 30)c

0.0013**

11.2 ± 6.0 (n = 27)

 

8.39 ± 4.69 (n = 30)d

0.0599

11.2 ± 6.0 (n = 27)

 

12.60 ± 4.26 (n = 30)e

0.3023

 

12.0 ± 6.9 (n = 12)

6.35 ± 4.5 (n = 30)c

0.0190*

 

12.0 ± 6.9 (n = 12)

8.39 ± 4.69 (n = 30)d

0.1154

 

12.0 ± 6.9 (n = 12)

12.60 ± 4.26 (n = 30)e

0.7862

bSMF (cyc/oct)

0.62 ± 0.47 (n = 27)

0.25 ± 0.21 (n = 12)

 

0.0013**

0.62 ± 0.47 (n = 27)

 

0.93 ± 0.68 (n = 30)c

0.0527

0.62 ± 0.47 (n = 27)

 

0.78 ± 0.53 (n = 30)d

0.2453

0.62 ± 0.47 (n = 27)

 

1.36 ± 0.70 (n = 30)e

1 × 10−5**

 

0.25 ± 0.21 (n = 12)

0.93 ± 0.68 (n = 30)c

1 × 10−5**

 

0.25 ± 0.21 (n = 12)

0.78 ± 0.53 (n = 30)d

3 × 10−5**

 

0.25 ± 0.21 (n = 12)

1.36 ± 0.70 (n = 30)e

1 × 10−9**

Event rate (Hz)

3.72 ± 0.74 (n = 27)

1.06 ± 0.61 (n = 12)

 

8 × 10−12**

Feature selectivity index

0.09 ± 0.03 (n = 27)

0.13 ± 0.05 (n = 12)

 

0.0242*

0.09 ± 0.03 (n = 27)

 

0.15 ± 0.08 (n = 30)c

0.0003**

0.09 ± 0.03 (n = 27)

 

0.12 ± 0.03 (n = 30)d

0.0096*

0.09 ± 0.03 (n = 27)

 

0.15 ± 0.04 (n = 30)e

6 × 10−8**

 

0.13 ± 0.05 (n = 12)

0.15 ± 0.08 (n = 30)c

0.2126

 

0.13 ± 0.05 (n = 12)

0.12 ± 0.03 (n = 30)d

0.3817

 

0.13 ± 0.05 (n = 12)

0.15 ± 0.04 (n = 30)e

0.1950

Nonlinearity threshold, ϴ (s.d.)

−1.14 ± 0.87 (n = 27)

1.26 ± 0.70 (n = 12)

 

8 × 10−9**

−1.14 ± 0.87 (n = 27)

 

0.61 ± 0.87 (n = 30)c

4 × 10−10**

−1.14 ± 0.87 (n = 27)

 

−0.57 ± 0.87 (n = 30)d

0.0175*

−1.14 ± 0.87 (n = 27)

 

−0.55 ± 0.74 (n = 30)e

0.0089*

 

1.26 ± 0.70 (n = 12)

0.61 ± 0.87 (n = 30)c

0.0190*

 

1.26 ± 0.70 (n = 12)

−0.57 ± 0.87 (n = 30)d

1 × 10−7**

 

1.26 ± 0.70 (n = 12)

−0.55 ± 0.74 (n = 30)e

2 × 10−7**

Nonlinearity transition, σ (s.d.)

2.21 ± 0.49 (n = 27)

1.03 ± 0.31 (n = 12)

 

2 × 10−10**

2.21 ± 0.49 (n = 27)

 

1.25 ± 0.48 (n = 30)c

9 × 10−10**

2.21 ± 0.49 (n = 27)

 

1.93 ± 0.67 (n = 30)d

0.0813

2.21 ± 0.49 (n = 27)

 

1.59 ± 0.27 (n = 30)e

1 × 10−6**

 

1.03 ± 0.31 (n = 12)

1.25 ± 0.48 (n = 30)c

0.0828

 

1.03 ± 0.31 (n = 12)

1.93 ± 0.67 (n = 30)d

6 × 10−7**

 

1.03 ± 0.31 (n = 12)

1.59 ± 0.27 (n = 30)e

3 × 10−5**

  1. Statistical testing was performed using two-tailed unpaired Student’s t-test; significant differences are indicated by *p  < 0.05 and **p  < 0.005.
  2. aCurrent-clamp (CC) recordings.
  3. bSTRFs for all events.
  4. cSTRFs for spikes.
  5. dSTRFs for large PSPs.
  6. eSTRFs for small PSPs.
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