Table 7.

Estimated hair cell/afferent contacts

Macular Subdivision	Hair Cell Density	Collecting Area, μm2	Hair Cells per Afferent	Number of Boutons	Boutons per Hair Cell
LES	0.0217	3,978	86.3	37.5	0.43
Striolar Zone 2	0.0181	2,131	38.6	27.0	0.70
Juxtastriola	0.0156	2,248	35.1	17.5	0.50
MES	0.0097	556	5.4	12.0	2.22

Hair cell density (hair cells/μm²) is calculated from Fig. 11 with an additional 25% correction (decrease in area used to calculate hair cell density) to equalize shrinkage for hair cell counts and afferent reconstructions. Collecting areas and number of boutons are medians from Neurolucida reconstructions. Hair cells per afferent (hair cell density × collecting area) is the estimated number of hair cells that fall within the median afferent collecting area in each zone. Boutons per hair cell (number of boutons/hair cells per afferent) is the estimated number of bouton contacts made by an afferent on each hair cell within its collecting area.