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. Author manuscript; available in PMC: 2024 Nov 1.
Published in final edited form as: J Comp Neurol. 2023 Jul 26;531(16):1651–1668. doi: 10.1002/cne.25523

FIGURE 2.

FIGURE 2

Representation of lower jaw in deafferented FBS – rapid amputee group (rAMP). (a1–a4) Representative examples of reconstructed physiological maps of four rAMP rats, mapped immediately after forelimb amputation. Solid circles indicate electrode penetration sites where receptive fields were examined. Locations of lower jaw responsive sites in the deafferented FBS (LJ-FBS) are shown by red circles and the area encompassing these sites within the FBS is enclosed with blue stippling. Lesion sites are designated with black-dashed circular lines surrounding a recording site. Non-responsive recording sites (NR), where lower jaw responses were not found within the FBS, are designated by black circles; lower jaw responsive sites outside the FBS are designated with blue circles and hindlimb responsive sites are shown with green circles. (b) Photomicrograph of a CO-stained flattened and tangentially cut section; FBS is enclosed by a white dashed line and the lower jaw responsive sites within the FBS are shown with red circles. Non-responsive penetration sites are indicated by black circles; lower jaw responsive sites outside the FBS are designated with blue circles and the location of a hindlimb responsive site is indicated with a green circle. (b1) Line drawing reconstruction from (b) showing all recording sites in the FBS; lower jaw responsive sites are indicated with red circles, and non-responsive sites are indicated with black circles. Recording sites surrounding the FBS are also shown. (c) Composite reconstruction of lower jaw responsive sites from seven rAMP rats are fitted on to the FBS template; red circles indicate locations of lower jaw responsive sites and black circles show non-responsive sites. 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.