The Journal of Neuroscience, August 13, 2003, ():
Sensitivity of Neurons to Weak Electric Fields
J. Neurosci.
Francis et al. 23 (19): 7255.
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Files in this Data Supplement:
- Additional Supplementary Data -
To further illustrate the nature of the effects of weak electric fields near the apparent threshold we have described, we have generated histograms showing the smallest significant field effects observed in individual experiments. These individual experimental results illustrate the values mentioned in the text of the main paper.
- Supplementary Figure 1
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PSTHs (20 msec bins) from 10 individual CA3 slice experiments A-J at 460 _V/mm rms (979 _V/mm peak). The number of consecutive crossings of the sham 2 SD confidence limit greater than 2 are enumerated with asterisks (**, ***, and ****). In the lower inset, K, is shown the solitary CA3 result (1/6 slices) where the histogram peak was significant at 370 _V/mm rms (787 _V/mm peak).
- Supplementary Figure 2
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PSTHs (10msec bins) from CA1 experiments (6 slices) at 140 _V/mm rms (298 _V/mm peak), with excitatory polarity indicated by plus (+) in panels A-E, and inhibitory polarity indicated by minus (-) in panels F-I. The number of consecutive crossings of the sham 2 SD confidence limit greater than 2 are enumerated with asterisks (**, ***, and ****). For excitatory field, 3/5 slices show significant peaks, while for inhibitory slices, 2/4 peaks are significant.
- Supplementary Figure 3
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PSTHs (10 msec bins) from 11 single unit CA1 slice experiments A-K at 185 _V/mm rms (394 _V/mm peak). The number of consecutive crossings of the sham 2 SD confidence limit greater than 2 SD are enumerated with asterisks (**, ***, and ****). For 185 _V/mm rms (394 _V/mm peak) 3/11 slices showed significant peaks. For 140 _V/mm rms (298 _V/mm peak), 1/14 slices showed significant peaks, and a histogram of this solitary significant example is shown in inset L.
