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. 2012 Jul 5;108(7):1965–1976. doi: 10.1152/jn.00276.2011

Fig. 4.

Fig. 4.

Changes in afferent fiber volley amplitude and latency during 100-Hz HFS. Fiber volleys were examined with fEPSPs blocked by 30 μM 6,7-dinitroquinoxaline-2,3-dione (DNQX; n = 4) or 30 μM DNQX + 50 μM D-AP5 (n = 4). A: fiber volley amplitude, normalized relative to the first stimulus, increased during the first several stimuli at 100 Hz but then progressively decreased. B: fiber volley latencies initially decreased during the first several stimuli but then progressively increased. Inset: sample recording from 1 slice showing superimposed fiber volleys recorded in response to stimuli 1, 5, 40, and 80 during 100-Hz HFS; stimulus artifacts (*) were partially removed.