Stereognosis will be lost in the lesion of:
Stereognosis is the ability to identify an object by its touch, texture. The object is placed in hands and is identified without seeing it. Fine touch sensation from the upper limb is carried toward coex in fasciculus cuneatus. The tract also carries the finer aspects of touch. Perception of touch occurs in the somatosensory coex I (areas 3, 1, 2); analysis and interpretation of the touch is done in the somatosensory coex II (areas 5, 7).
Fasciculus gracilis
Fasciculus cuneatus
Anterior spinothalamic tract
Lateral spinothalamic tract
Sensory System