Reicke N
Laryngol Rhinol Otol (Stuttg). 1977 Dec;56(12):1030-6.
The Trigeminus nerve is represented by a large area in brainstem and therefore we often find symptoms of this nerve, if there are dysfunctions in this region. Especially when we suspect disorders of the central part of the vestibular or auditory systems the Trigeminus can give distinct signs. Besides other qualities (tactile, nociceptive) the sensitivity for warmth can be measured exactly with the thermic-impulse-test (TITT). The importance of this test is shown in some cases (tumor of the cerebello-pontine angle, tumors in the brainstem and multiple sclerosis). On the other hand in lesons of the facial part of the skull (traumatic, tumoral and postoperative) the TITT gives reliable signs and seems to be more sensitive than other tests of Trigeminus.
三叉神经在脑干中占据较大区域，因此如果该区域出现功能障碍，我们常常会发现该神经的症状。特别是当我们怀疑前庭或听觉系统的中枢部分存在紊乱时，三叉神经会给出明显的体征。除了其他特性（触觉、伤害性感受）外，通过热脉冲测试（TITT）可以精确测量对热的敏感性。该测试的重要性在某些病例中得到了体现（如桥小脑角肿瘤、脑干肿瘤和多发性硬化症）。另一方面，在颅骨面部病变（创伤性、肿瘤性和术后）中，TITT能给出可靠的体征，并且似乎比其他三叉神经测试更为敏感。
