Figure 3. Following intense activation of AchRs or mGluRs the ISO can be associated with cyclic paroxysms.
A. Simultaneous LFP and unit recording from the VB in the presence of 100 µM Cch showing an ISO at ∼0.03 Hz. The underlined section is enlarged below. Additional enlargements of the sections marked 1 and 2 are shown further below, as indicated, and reveal that LFP activity consists of a mixture of fast runs at ∼10 Hz corresponding to periods of tonic firing (1), and rhythmic SW/PSW complexes at ∼4 Hz (2) which are related to unusually powerful HT burst activity. In 1 and 2, the underlined sections are expanded to the immediate right. B. Simultaneous LFP and unit recording from the LGN in the presence of 200 µM trans-ACPD showing an ISO at ∼0.004 Hz. The underlined section is enlarged below. Additional enlargements of the sections marked 1 and 2 are shown further below, as indicated, and reveal that field activity consists of rhythmic SW/PSW complexes at ∼3 Hz which are closely related to HT burst activity in the simultaneously recorded TC neuron.
