Electroencephalographic and clinical features of patients with dementia with Lewy bodies and senile dementia of Alzheimer type

Case No	Age at EEG (y)	Time from onset of clinical symptoms to death (months)	Clinical dementia rating	Hallucinations	Episodic loss of consciousness	Time from onset of clinical symptoms to date of EEG recording (months)	Time of onset to EEG as % onset to death	Dominant activity	Other frequencies	TLSWT
SDAT Patients:
1	80	99	1	No	No	60	61	Alpha	Beta Theta	No
2	76	108	0.5	No	No	36	33	Alpha	Theta Beta	No
3¹	64	96	2	No	Yes	47	49	Delta	Theta	Yes L/R
4	76	19	2	Auditory	No	16	84	Alpha	Theta (minimal)	No
5	77	50	1	No	No	36	72	Alpha	Theta Beta Delta	No
6	80	54	1	No	No	39	72	Alpha/Theta	Nil	No
7	65	21	3	No	No	15	71	Delta	Theta Alpha	Yes
8	92	36	2	Yes, visual	No	4	11	Alpha	Theta Delta	No
9	76	63	2	No	No	30	48	Theta	Delta Alpha	No
10	54	128	1	No	No	29	23	Alpha	Theta Delta	No
11	67	57	2	No	No	33	58	Delta	Theta Beta	No
DLB Patients:
12	85	107	2	No	No	17	16	Alpha	Theta Delta	No
13	82	32	2	Visual	Yes	20	63	Alpha	Beta	Yes L
14 Record 1	84	31	2	Visual	Yes	24	77	Theta	Delta Beta	No
Record 2								Theta	Delta	No
15²	84	6	1	No	Yes	5	83	polyrhythmic	Alpha Theta Delta	Yes L
16	72	15	0.5	No	No	4	27	Theta	Beta	No
17 Record 1	64	41	1	Visual	Yes	24	59	Alpha	Delta Theta beta	Yes L
Record 2								Alpha	Beta Theta	Yes L/R^1-150
Record 3								Polyrhythmic	Delta Theta	No
18³	84	2	2	Visual and Auditory	No	1	50	Delta	Theta	No
19	68	20	2	Visual and Auditory	No	11	55	Alpha	Theta Delta	Yes L/R
20⁴	89	22	1	Visual	No	16	73	Theta	Delta	No
21	79	27	0.5	No	Yes	11	41	Theta	Nil	Yes L/R
22 Record 1	71	32	1	Visual	Yes	20	63	Delta	Theta	Yes L/R
Record 2⁵								Delta	Theta	Yes L
23⁶	77	24	2	Visual/olfactory/gustatory	Yes	23	96	Delta	Theta	No
24 Record 1	79	70	2	No	No	69	99	Alpha	Theta Delta	No
Record 2								Theta	Alpha	Yes L
25	76	120	0.5	No	No	36	30	Alpha Theta	Delta	No

EEG findings in dementia with Lewy bodies and Alzheimer’s disease

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