Fig. 5: Bandwidth comparison between TRFs and STRFs.
From: Stimulus dependent transformations between synaptic and spiking receptive fields in auditory cortex
a Relationship between TRF characteristic frequencies and STRF best frequencies derived from all events (n = 40/66 neurons with paired recordings for both, pure tones and DMR stimuli; Pearson’s r = 0.73, p = 10−7). b Relationship between spike-based STRF best frequencies and PSP-based STRF best frequencies (n = 30/40 neurons with significant STRF subfields for spiking, large PSP, and small PSP events; large PSPs (closed triangles), small PSPs (open triangles)). c Relationship between spike-based STRF bandwidths and PSP-based STRF bandwidths (n = 30/40 neurons with significant STRF subfields for spiking, large PSP, and small PSP events; large PSPs (closed triangles), small PSPs (open triangles); single-peaked STRFs (black), double-peaked STRFs (red) for spikes, or large PSPs, or small PSPs). Note that red color indicates the presence of a second peak in small PSP-, or large PSP-, or spike-based STRFs. d Relationship between STRF bandwidths and TRF bandwidth30s (n = 30/40 neurons with significant STRF subfields for spiking, large PSP, and small PSP events). e Relationship between TRF Q30s and STRF Qs. The black closed circles indicate the relationship between PSP-based TRF Q30s and STRF Qs derived from all events (n = 40/66 neurons with paired recordings for both, pure tones and DMR stimuli; two-tailed paired Student’s t-test, p = 10−9). Open squares indicate the relationship between spike-based TRF Q30s (normalized-driven ratio ≥0.3) and STRF Qs derived from all events (n = 15/40 neurons with paired recordings for TRFs (normalized-driven ratio ≥0.3) and STRFs; two-tailed paired Student’s t-test, p = 0.0025). f Bandwidth differences (Δbandwidth) between PSP-based TRFs and STRFs. Δbandwidths (mean ± s.d., n = 30/40 neurons with significant STRF subfields for spiking, large PSP, and small PSP events) were 0.99 ± 0.45 octaves (for spikes), 0.92 ± 0.44 octaves (for large PSPs), and 0.99 ± 0.44 octaves (for small PSPs). The median Δbandwidth values, the middle line between hinges, were 1.02 for spikes, 1.01 for large PSPs, and 0.91 for small PSPs. The lower and upper hinges are at the 25th and 75th percentiles. Minimum and maximum values are indicated by whiskers.
