<prompt> Upper motor neuron lesion will not cause:HypeoniaFasciculationsPositive BabinskiHyper-reflexia  <response>: Upper motor neurons lesions initially causes muscles to become weak and flaccid but eventually leads to spasticity, hypeonia, hyperactive stretch reflexes. Upper motor neurons include: Coicospinal tract or pyramidal tract Extrapyramidal tract: rubrospinal, tectospinal, vestibulospinal, reticulospinal Upper motor neuron paralysis lower motor neuron paralysis Affects whole groups of muscles - like hemiplegia, paraplegia, or monoplegia Single muscles affected No atrophy Severe atrophy No fasciculations Fasciculations present Rigidity Flaccid paralysis Increased tendon reflexes Hyper-reflexia Absent tendon reflexes Extensor plantar reflex Babinski sign Normal, if present Hypeonia Hypotonia 