FIGURE 3.

Representation of lower jaw in the deafferented FBS – rapid brachial plexus nerve cut group (rBPnc). (a1–a4) Representative examples of reconstructed physiological maps of four rBPnc rats, mapped immediately after nerve cut. Lower jaw responsive sites in deafferented FBS (LJ-FBS) are shown by red circles and their areas within the FBS are enclosed by blue stippling. Lesion sites are designated with black-dashed circular lines around a recording site. Non-responsive sites (NR) where lower jaw responses were not found are designated by black circles; lower jaw responsive sites outside the FBS are indicated with blue circles and hindlimb (HL) responsive sites are designated with green circles. (b) Photomicrograph of a CO-stained flattened and tangentially cut section; FBS is enclosed by white dashed line and a lower jaw responsive site within the FBS is shown with a red circle. (b1) Line drawing reconstruction from (b) showing lower jaw responsive site (red circle) and non-responsive sites (black circles) in the FBS. (c) Composite reconstruction of lower jaw responsive sites from seven rBPnc rats are fitted on the FBS template; lower jaw responsive sites (red circles), non-responsive sites (black circles). FBS nomenclature shown in box at lower right. Digit one (D1) through D5, thenar pad (TH), digit pads (P1–P3), hypothenar pad (HT), lower jaw (LJ), lower jaw recording sites in FBS (LJ-FBS), hindlimb (HL), no-response (NR). Lower jaw barrel subfield: LJBSF; Anterior Lateral Barrel Subfield: ALBSF. Scale bars = 1 mm.