Cerebellar Ataxia Followed by Stiff Person Syndrome in a Patient with Anti-GAD Antibodies

Table 1

The evidence of exteroceptive reflexes following the right median nerve stimulation typical of reflex myoclonus as characterised in stiff person syndrome. When the median nerve was stimulated, there was a reflex EMG activity initially seen at rectus abdominis at a latency of 50.52–63.54 ms. Following this, there was rostral to caudal recruitment of the paraspinals (PSP) and sternocleidomastoid (SCM) with latencies of 49.48–91.15 ms.

Nerve/sites	Onsetms
R median nerve-triggered exteroceptive test
R SCM	70.83		82.29	57.29	86.98	74.48	72.40
R deltoid	76.56	95.31	68.75	63.02	78.65	72.40	62.50
R C7 PSP	65.63	72.40			88.54	70.83	51.04
R T4 PSP	63.54	61.46	49.48		75.00	69.79	46.88
R T12 PSP	50.52	58.85	54.17	59.38	54.69	58.33	56.77
R rectus abdominus	65.63	58.85		66.15	54.69	70.83	57.29