Glabellar reflex
 | It has been suggested that this article be merged with Myerson's sign. (Discuss) Proposed since August 2015. |
 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (July 2014) |
Glabellar reflex (also known as the "glabellar tap sign") (Glabella) is a primitive reflex. It is elicited by repetitive tapping on the forehead. Subjects blink in response to the first several taps. If the blinking persists, this is known as Myerson's sign and is abnormal and a sign of frontal release; it is often seen in people who have Parkinson's disease.[1]
The afferent sensory signals are transmitted by the trigeminal nerve, and the efferent signals come back to orbicularis oculi muscle via the facial nerve, which in turn reflexively contracts causing blinking.
See also
Notes
- ^ "Glabellar tap". GP Notebook. Retrieved 18 April 2012.
References
- Ritz, Beate; Rhodes, Shannon L.; Bordelon, Yvette; Bronstein, Jeff; Lewis, Patrick (May 15, 2012). "α-Synuclein Genetic Variants Predict Faster Motor Symptom Progression in Idiopathic Parkinson Disease". PLoS ONE. 7 (5): e36199. doi:10.1371/journal.pone.0036199.
{{cite journal}}: CS1 maint: unflagged free DOI (link) - Pishvaee, Babak; Payne, Gregory S.; Costaguta, Giancarlo; Yeung, Bonny G.; Ryazantsev, Sergey; Greener, Tsvika; Greene, Lois E.; Eisenberg, Evan; McCaffery, J. Michael (14 November 2000). "A yeast DNA J protein required for uncoating of clathrin-coated vesicles in vivo". Nature Cell Biology. 2 (12): 958–963. doi:10.1038/35046619.
- Paisán-Ruiz, Coro; Guevara, Rocio; Federoff, Monica; Hanagasi, Hasmet; Sina, Fardaz; Elahi, Elahe; Schneider, Susanne A.; Schwingenschuh, Petra; Bajaj, Nin; Emre, Murat; Singleton, Andrew B.; Hardy, John; Bhatia, Kailash P.; Brandner, Sebastian; Lees, Andrew J.; Houlden, Henry (15 September 2010). "Early-onset L-dopa-responsive parkinsonism with pyramidal signs due to ATP13A2, PLA2G6, FBXO7 and spatacsin mutations". Movement Disorders. 25 (12): 1791–1800. doi:10.1002/mds.23221.
- Edvardson, Simon; Cinnamon, Yuval; Ta-Shma, Asaf; Shaag, Avraham; Yim, Yang-In; Zenvirt, Shamir; Jalas, Chaim; Lesage, Suzanne; Brice, Alexis; Taraboulos, Albert; Kaestner, Klaus H.; Greene, Lois E.; Elpeleg, Orly; Wider, Christian (May 1, 2012). "A Deleterious Mutation in DNAJC6 Encoding the Neuronal-Specific Clathrin-Uncoating Co-Chaperone Auxilin, Is Associated with Juvenile Parkinsonism". PLoS ONE. 7 (5): e36458. doi:10.1371/journal.pone.0036458.
{{cite journal}}: CS1 maint: unflagged free DOI (link)