Читать книгу Neurology - Charles H. Clarke - Страница 171

These integrate visual and somatosensory information, such as awareness of body parts and their relation to objects. A complex nomenclature has evolved. Attempts to associate precise areas to particular functions are bedevilled by variation between individuals, and because the cortex is not divided into discrete compartments. The following are seen with lesions of either parietal lobe:

 Attention defects in the contralateral visual field and neglect of the opposite side

 Lower quadrantic homonymous field defects

 Astereognosis – inability to recognise common objects placed in the palm despite normal sensation

 Agraphaesthesia – inability to recognise numbers drawn on the palm

 Pseudo‐athetosis (waving about) and/or drift of an outstretched contralateral hand

 Contralateral cortical sensory loss – impaired two point discrimination despite intact peripheral sensation.

Sensory epilepsy is sometimes a feature.