Midlatency Auditory Evoked Potentials and Explicit and Implicit Memory in Patients Undergoing Cardiac Surgery

Schwender, D.; Kaiser, Allen B.; Klasing, S.; Peter, K; Pöppel, E.

doi:10.1097/00000542-199403000-00004

Cited by 155 publications

(87 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Some studies claim that hearing is the last of the senses to go before a patient loses consciousness and probably the first to return when consciousness is regained [16,17], while others do not support this claim [18]. However, it has been shown that some patients continue to hear under general anaesthesia [17] even when a general anaesthetic is administered with opioids, benzodiazepines and volatile inhalation agents, and when intra-operative control parameters, such as heart rate and arterial blood pressure, remain within normal limits [3,19]. Through preservation of the early cortical potentials of midlatency auditory evoked potentials, auditory information may be processed [20,21], especially during 'light' anaesthesia [21,22].…”

Section: Discussionmentioning

confidence: 99%

Hemispheric‐synchronisation during anaesthesia: a double‐blind randomised trial using audiotapes for intra‐operative nociception control

Kliempt¹,

Ruta

Ogston

et al. 1999

Anaesthesia

View full text Add to dashboard Cite

SummaryThe possible antinociceptive effect of hemispheric-synchronised sounds, classical music and blank tape were investigated in patients undergoing surgery under general anaesthesia. The study was performed on 76 patients, ASA 1 or 2, aged 18-75 years using a double-blind randomised design. Each of the three tapes was allocated to the patients according to a computer-generated random number table. General anaesthesia was standardised and consisted of propofol, nitrous oxide 66%/ oxygen 33%, isoflurane and fentanyl. Patients breathed spontaneously through a laryngeal mask and the end-tidal isoflurane concentration was maintained near to its minimum alveolar concentration value of 1.2%. Fentanyl was given intravenously sufficient to keep the intra-operative heart rate and arterial blood pressure within 20% of pre-operative baseline values and the fentanyl requirements were used as a measure of nociception control. Patients to whom hemispheric-synchronised sounds were played under general anaesthesia required significantly less fentanyl compared with patients listening to classical music or blank tape (mean values: 28 g, 124 g and 126 g, respectively) (p < 0.001). This difference remained significant when regression analysis was used to control for the effects of age and sex.

show abstract

Section: Discussionmentioning

confidence: 99%

Hemispheric‐synchronisation during anaesthesia: a double‐blind randomised trial using audiotapes for intra‐operative nociception control

Kliempt¹,

Ruta

Ogston

et al. 1999

Anaesthesia

View full text Add to dashboard Cite

show abstract

“…31 However, the midlatency components of auditory evoked responses have been shown to correlate with preservation of implicit memory function during anesthesia. 32 Van Hooff et al demonstrated that event-related potentials recorded intraoperatively during cardiac surgery correlated with postoperative memory. 3 3 Further studies are needed to clarify to what extend midlatency MnSSER components can be used as a tool to evaluate the likelihood of preserved memory function during anesthesia.…”

Section: Discussionmentioning

confidence: 99%

Median nerve evoked responses and explicit memory during recovery from isoflurane/nitrous oxide anesthesia

Rundshagen

Schnabel

Esch

2000

Can J Anesth/J Can Anesth

View full text Add to dashboard Cite

“…Postanesthesia, the patients had significantly better implicit recall (i.e., primed recall of memory) relative to explicit recall (i.e., conscious recollection of memory) for the events they were instructed to remember (while anesthetized) [30]. Investigations of visuospatial neglect further illustrate the concept of covert processing; Marshall and Halligan, for example, reported evidence indicating that a patient with left visual neglect could not directly supervise visual attention to the left visual field, but could discriminate between visual pictures presented in the left visual field [32].…”

Section: Automatic and Covert Neural Processing Of Passive Sensory Inputmentioning

confidence: 93%

“…One study illustrating the concept of automatic responsiveness involved providing anesthetized patients undergoing cardiac surgery with auditory instructions regarding a specific memory task [30]. During the exposure to the auditory information, the patients exhibited automatic changes in auditory evoked potentials.…”

Section: Automatic and Covert Neural Processing Of Passive Sensory Inputmentioning

confidence: 99%

Preliminary framework for Familiar Auditory Sensory Training (FAST) provided during coma recovery

Pape¹,

Rosenow²,

Harton³

et al. 2012

JRRD

View full text Add to dashboard Cite

Abstract-Since there remains a need to examine the nature of the neural effect and therapeutic efficacy/effectiveness of sensory stimulation provided to persons in states of seriously impaired consciousness, a passive sensory stimulation intervention, referred to as the Familiar Auditory Sensory Training (FAST) protocol, was developed for examination in an ongoing, double-blind, randomized clinical trial (RCT). The FAST protocol is described in this article according to the preliminary framework, which is a synthesis of knowledge regarding principles of plasticity and capabilities of the human brain to automatically and covertly process sensory input. Feasibility issues considered during the development of the intervention are also described. To enable replication of this intervention, we describe procedures to create the intervention and lessons learned regarding the creation process. The potential effect of the intervention is illustrated using functional brain imaging of nondisabled subjects. This illustration also demonstrates the relevance of the rationale for designing the FAST protocol. To put the intervention within the context of the scientific development process, the article culminates with a description of the study design for the ongoing RCT examining the efficacy of the FAST protocol.

show abstract

Midlatency Auditory Evoked Potentials and Explicit and Implicit Memory in Patients Undergoing Cardiac Surgery

Cited by 155 publications

References 0 publications

Hemispheric‐synchronisation during anaesthesia: a double‐blind randomised trial using audiotapes for intra‐operative nociception control

Hemispheric‐synchronisation during anaesthesia: a double‐blind randomised trial using audiotapes for intra‐operative nociception control

Median nerve evoked responses and explicit memory during recovery from isoflurane/nitrous oxide anesthesia

Preliminary framework for Familiar Auditory Sensory Training (FAST) provided during coma recovery

Contact Info

Product

Resources

About