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Related Concept Videos

Facial Feedback Hypothesis01:24

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Charles Darwin proposed that facial expressions are an evolutionary adaptation for communication. He argued that these expressions are not influenced by culture but are universal across species. For example, a snarling expression with exposed teeth signals a threat in many animals, including humans. Darwin also suggested that displaying an emotion can intensify the feeling. Smiling, for example, could enhance one's sense of happiness. This idea laid the foundation for understanding the role...
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Cranial nerves are responsible for transmitting motor and sensory information between the brain and various parts of the body. There are twelve pairs of cranial nerves. While the first six innervate the head and neck, the latter six nerves innervate the head and neck, as well as organs and tissues in the thoracic and abdominal cavities. They facilitate communication, expression, and autonomic control within the human body.
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Related Experiment Video

Updated: Jan 23, 2026

Facial Nerve Surgery in the Rat Model to Study Axonal Inhibition and Regeneration
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Facial nerve and parotid surgery.

R Brusati1, A Bozzetti, M Chiapasco

  • 1Department of Maxillo-Facial Surgery, University and Hospital of Parma, Italy.

Journal of Cranio-Maxillo-Facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery
|October 1, 1987
PubMed
Summary

Parotid gland tumor surgery is safe, with a low rate of temporary facial nerve issues (28%) and only one permanent nerve lesion in 100 cases. Proper parotidectomy technique ensures patient safety and good outcomes.

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Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Oncology

Background:

  • Parotid gland tumors are common salivary neoplasms.
  • Surgical management of parotid tumors requires careful attention to facial nerve preservation.
  • Facial nerve injury is a significant concern following parotidectomy.

Purpose of the Study:

  • To analyze facial nerve function after parotid surgery for tumors.
  • To assess the safety and outcomes of parotidectomy.
  • To quantify the incidence of temporary and permanent facial nerve lesions.

Main Methods:

  • Retrospective analysis of 100 surgical procedures for parotid gland tumors.
  • Detailed assessment of facial nerve function post-operatively.
  • Documentation of lesion type, affected nerve branches, and recovery status.

Main Results:

  • A low incidence of temporary facial nerve lesions (28%) was observed.
  • Temporary lesions affected single branches and showed rapid regression.
  • Only one case of a permanent, complete facial nerve lesion occurred, with the nerve anatomically intact.

Conclusions:

  • Parotidectomy is a safe surgical procedure when performed correctly.
  • Facial nerve function is generally well-preserved after parotidectomy.
  • The risk of permanent facial nerve damage is low, even in cases of anatomical integrity.