ABSTRACT
The cerebellar examination evolved from observations of experimental lesions made
by neurophysiologists and clinical descriptions of patients with trauma to the cerebellum.
At the beginning of the 19th century, neurophysiologists such as Luigi Rolando, Marie-Jean-Pierre
Flourens, and John Call Dalton, Jr. ablated portions of the cerebellum of a variety
of animals and observed staggering gait, clumsiness, and falling from side to side
without loss of strength. They concluded that the cerebellum coordinated voluntary
movements. In 1899, Joseph Francois Félix Babinski observed that patients with cerebellar
lesions could not execute complex movements without breaking down into their elemental
movements and described the defect as dysmetria. In 1902, Babinski coined the term
dysdiodochokinesis to describe the inability to perform rapid execution of movements requiring alternate
contractions of agonist and antagonist muscles. Gordon Holmes in 1904 described the
phenomena of rebound, noting that if a limb ipsilateral to a cerebellar lesion is
suddenly released from tension, the appendage will flail. In 1917, Gordon Holmes reported
hypotonia and dysmetria in men wounded by gunshot wounds to their cerebellum. These
observations were rapidly included in descriptions of the cerebellar examination in
popular contemporaneous textbooks of neurology. Modern observations have demonstrated
that the cerebellum influences such cognitive functions such as planning, verbal fluency,
abstract reasoning, prosody, and use of correct grammar.
KEYWORD
Archicerebellum - ataxia - dysdiodochokinesis - dysnergia - hypotonia - rebound -
rapid alternating movements - neocerebellum - nystagmus - paleocerebellum