Comments |
p.2987 right column bottom paragraph:"Quantitative evaluation of spine dimensions-Dimensions of spines, synapses, and axonal varicosities were combined for all 7 dendritic segments and are summarized in Table 2. One hundred unbranched dendritic spines were complete within these photographic series. Of these, 8 were stubby spines with no constriction in their necks, and hence they were treated as spine heads. Thus, 92 spine necks were available for analysis. Fifty-eight varicosities were reconstructed and all of their synaptic vesicles counted (from photographic series 17, 18, 21, 22, 24). The correlation (r) between each spine or axonal dimension and the PSD area was determined, and the probability of a significant difference (p < 0.05) from zero correlation was tested (Horowitz, 1974). PSD area was positively correlated with total spine volume, although the correlation with spine
head volume was much greater than that with spine neck volume (Table 2, Fig. 4A)." PSD=PostSynaptic Density. See notes beneath table |