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Brainwave entrainment is a colloquialism for 'neural entrainment', [25] which is a term used to denote the way in which the aggregate frequency of oscillations produced by the synchronous electrical activity in ensembles of cortical neurons can adjust to synchronize with the periodic vibration of external stimuli, such as a sustained acoustic ...
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Richard Caton discovered electrical activity in the cerebral hemispheres of rabbits and monkeys and presented his findings in 1875. [4] Adolf Beck published in 1890 his observations of spontaneous electrical activity of the brain of rabbits and dogs that included rhythmic oscillations altered by light, detected with electrodes directly placed on the surface of the brain. [5]
Electrical brain stimulation was first used in the first half of the 19th century by pioneering researchers such as Luigi Rolando [citation needed] (1773–1831) and Pierre Flourens [citation needed] (1794–1867), to study the brain localization of function, following the discovery by Italian physician Luigi Galvani (1737–1798) that nerves and muscles were electrically excitable.
The cerebral hemispheres first appear on day 32. [69] Early in the fourth week, the cephalic part bends sharply forward in a cephalic flexure . [ 67 ] This flexed part becomes the forebrain (prosencephalon); the adjoining curving part becomes the midbrain (mesencephalon) and the part caudal to the flexure becomes the hindbrain (rhombencephalon).
Tactile discrimination is the ability to differentiate information through the sense of touch.The somatosensory system is the nervous system pathway that is responsible for this essential survival ability used in adaptation. [1]
A sonic drill head works by sending high frequency resonant vibrations down the drill string to the drill bit, while the operator controls these frequencies to suit the specific conditions of the soil/rock geology. Torque Converter. [4] A mechanical application of sonic theory on the transmission of power by vibrations.
Impaired tactile, proprioceptive, and vibration sense of trunk and limbs (contralateral medial lemniscus) Medial medullary syndrome , also known as inferior alternating syndrome , hypoglossal alternating hemiplegia , lower alternating hemiplegia , [ 1 ] or Dejerine syndrome , [ 2 ] is a type of alternating hemiplegia characterized by a set of ...