Frequency tuning curves (FTC) from the 2 ears illustrate 3 classes (UP,
NONE, and DOWN) of interaural characteristic frequency (CF, arrow)
misalignment in primary auditory cortex (AI) ipsilateral and contralateral
to the injured right ear (X crossout). Top: summary of
cochlea status of contralateral (contra) and ipsilateral (ipsi) ear inputs
to each AI. A–F, top subplot: FTC
from contra ear input. Bottom subplot: FTC from ipsi ear
input. Bottom subplot CF is the reference value for CF
misalignment classification. A–C and
D–F show data from AI ipsi and AI contra to the
injured ear, respectively. A and F
illustrate nonoverlap of tuning curve bandwidth 10 dB above threshold (BW10)
with CF derived from the other ear. Input ear is specified at bottom
left of subplots. Circle marks CF; square marks upper and lower
frequency edges of BW10.