EEG reactivity in coma

Comparing stimuli

Antti Tolonen, B Young, M Särkelä

Research output: Contribution to journalOther journal contributionScientific

Abstract

Background: EEG reactivity has prognostic utility in coma. However, the relative effectiveness of various stimuli has not been systematically explored. Methods: We chose 200 adult patients with in coma in ICU and excluded patients who were brain dead or on anesthetic doses of sedative medication. EEGs were recorded while applying stimuli randomly: vocal stimulus (vS): calling of the patient's first name; "noisy stimulus" (NS): tone of 120 dB into both ears; nasal stimulus (NaS): tissue paper inserted into the nares; nailbed stimulus (NBS): pressure on the nailbed of index finger. Results: The percentage in which reactivity to one stimulus was associated with reactivity to another stimulus is shown in Table: Conclusions: It is best to apply more than one stimulus modality when assessing EEG reactivity. With respect to associations, NS is the least effective stimulus
Original languageEnglish
Pages (from-to)S17
JournalCanadian Journal of Neurological Sciences
Volume41
Issue number3 (Suppl. 1)
Publication statusPublished - 2014
MoE publication typeNot Eligible
Event49th Annual Congress of the Canadian Neurological Sciences Federation, Banff, Alberta, Canada, 3 - 6 June 2014 -
Duration: 1 Jan 2014 → …

Fingerprint

Coma
Electroencephalography
Brain Death
Hypnotics and Sedatives
Nose
Fingers
Names
Ear
Anesthetics
Pressure

Keywords

  • EEG
  • coma
  • reactivity

Cite this

Tolonen, A., Young, B., & Särkelä, M. (2014). EEG reactivity in coma: Comparing stimuli. Canadian Journal of Neurological Sciences, 41(3 (Suppl. 1)), S17.
Tolonen, Antti ; Young, B ; Särkelä, M. / EEG reactivity in coma : Comparing stimuli. In: Canadian Journal of Neurological Sciences. 2014 ; Vol. 41, No. 3 (Suppl. 1). pp. S17.
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Tolonen, A, Young, B & Särkelä, M 2014, 'EEG reactivity in coma: Comparing stimuli', Canadian Journal of Neurological Sciences, vol. 41, no. 3 (Suppl. 1), pp. S17.

EEG reactivity in coma : Comparing stimuli. / Tolonen, Antti; Young, B; Särkelä, M.

In: Canadian Journal of Neurological Sciences, Vol. 41, No. 3 (Suppl. 1), 2014, p. S17.

Research output: Contribution to journalOther journal contributionScientific

TY - JOUR

T1 - EEG reactivity in coma

T2 - Comparing stimuli

AU - Tolonen, Antti

AU - Young, B

AU - Särkelä, M

N1 - Project code: 70554

PY - 2014

Y1 - 2014

N2 - Background: EEG reactivity has prognostic utility in coma. However, the relative effectiveness of various stimuli has not been systematically explored. Methods: We chose 200 adult patients with in coma in ICU and excluded patients who were brain dead or on anesthetic doses of sedative medication. EEGs were recorded while applying stimuli randomly: vocal stimulus (vS): calling of the patient's first name; "noisy stimulus" (NS): tone of 120 dB into both ears; nasal stimulus (NaS): tissue paper inserted into the nares; nailbed stimulus (NBS): pressure on the nailbed of index finger. Results: The percentage in which reactivity to one stimulus was associated with reactivity to another stimulus is shown in Table: Conclusions: It is best to apply more than one stimulus modality when assessing EEG reactivity. With respect to associations, NS is the least effective stimulus

AB - Background: EEG reactivity has prognostic utility in coma. However, the relative effectiveness of various stimuli has not been systematically explored. Methods: We chose 200 adult patients with in coma in ICU and excluded patients who were brain dead or on anesthetic doses of sedative medication. EEGs were recorded while applying stimuli randomly: vocal stimulus (vS): calling of the patient's first name; "noisy stimulus" (NS): tone of 120 dB into both ears; nasal stimulus (NaS): tissue paper inserted into the nares; nailbed stimulus (NBS): pressure on the nailbed of index finger. Results: The percentage in which reactivity to one stimulus was associated with reactivity to another stimulus is shown in Table: Conclusions: It is best to apply more than one stimulus modality when assessing EEG reactivity. With respect to associations, NS is the least effective stimulus

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