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Fig. 1 | BMC Neuroscience

Fig. 1

From: Transcranial focused ultrasound stimulation of motor cortical areas in freely-moving awake rats

Fig. 1

The schematics for the wearable miniature transcranial FUS headgear, acoustic profile, and experimental design. a A demonstration of the wearable setup applied on a wood-block. 1: FUS transducer, 2: power lines, 3: detachable applicator with customizable dimensions of ‘Arm’ and ‘Drop’, 4: ball-and-socket joint, 5: set screws to securely fix the applicator, 6: skull-mounted pedestal, 7: skull-mounted screws and medical glue. The drop length of the applicator in the photo was 4.5 mm. b The acoustic intensity profile across (left panel) the longitudinal plane and (right panel) the transversal plane at ~ 10 mm away from exit plane of the transducer. FWHM and FW90%M of the intensity profile are depicted with a red and white dotted line, respectively. The black arrow indicates sonication direction (from the left to right). Scale bar = 2 mm. c A rat resting in a cage (left panel), a freely-moving rat during the awake sonication session (middle panel), and an anesthetized rat (ketamine/xylazine) with a cone-shaped coupling hydrogel (right panel). d Schematic drawing of the experimental settings compatible with both anesthetized and freely-moving awake rat. e Exemplar targeting to the rat motor cortex for the left forelimb. f The sonication parameters used. TBD tone burst duration, IPI inter-pulse interval, PRF pulse repetition frequency, sonication duration, ISI inter-stimulation interval

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