Supplemental data

Files in this Data Supplement:

• supplemental material - Movie 1: Small intracortical microvessel as visualized in a slice by infrared videomicroscopy before (1-120 sec) and after the stimulation (which starts at 120 sec) of an interneuron located nearby the microvessel. The diameter of the blood vessel increased after the stimulation until the end of the recording. For more details see manuscript, Figure 2.
• supplemental material - Movie 2: Intracortical microvessel visualized in a slice by infrared videomicroscopy before (0-300 sec) and after the stimulation (which starts at 300 sec) of an interneuron located nearby the microvessel. The diameter of the blood vessel decreased after the stimulation but regains its original size by the end of the recording. For more details, see manuscript, Figure 2.
• supplemental material - Movie 3: Contractile element visualized around a small microvessel by infrared videomicroscopy in a cortical slice. First, the contractile structure is indicated before and after the stimulation of a nearby interneuron to illustrate the morphological change. Then, the contractile part of the smooth muscle has been painted in pink to better follow its change throughout the recording. The shape of the contractile structure (sphincter) can be seen before the stimulation of the neuron (0-300 sec) and after stimulation (which starts at 300 sec) the structure contracts and then returns to its original shape bringing back the diameter of the vessel to its original size before stimulation, For more details, see manuscript (Discussion).