Long-term visuo-gustatory appetitive and aversive conditioning potentiate human visual evoked potentials

Gert R.J. Christoffersen*, Jakob L. Laugesen, Per Møller, Wender L.P. Bredie, Todd R. Schachtman, Christina Liljendahl, Ida Viemose

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Resumé

Human recognition of foods and beverages are often based on visual cues associated with flavors. The dynamics of neurophysiological plasticity related to acquisition of such long-term associations has only recently become the target of investigation. In the present work, the effects of appetitive and aversive visuo-gustatory conditioning were studied with high density EEG-recordings focusing on late components in the visual evoked potentials (VEPs), specifically the N2-P3 waves. Unfamiliar images were paired with either a pleasant or an unpleasant juice and VEPs evoked by the images were compared before and 1 day after the pairings. In electrodes located over posterior visual cortex areas, the following changes were observed after conditioning: the amplitude from the N2-peak to the P3-peak increased and the N2 peak delay was reduced. The percentage increase of N2-to-P3 amplitudes was asymmetrically distributed over the posterior hemispheres despite the fact that the images were bilaterally symmetrical across the two visual hemifields. The percentage increases of N2-to-P3 amplitudes in each experimental subject correlated with the subject’s evaluation of positive or negative hedonic valences of the two juices. The results from 118 scalp electrodes gave surface maps of theta power distributions showing increased power over posterior visual areas after the pairings. Source current distributions calculated from swLORETA revealed that visual evoked currents rose as a result of conditioning in five cortical regions—from primary visual areas and into the inferior temporal gyrus (ITG). These learning-induced changes were seen after both appetitive and aversive training while a sham trained control group showed no changes. It is concluded that long-term visuo-gustatory conditioning potentiated the N2-P3 complex, and it is suggested that the changes are regulated by the perceived hedonic valence of the US.

OriginalsprogEngelsk
Artikelnummer467
TidsskriftFrontiers in Human Neuroscience
Vol/bind11
Antal sider16
ISSN1662-5161
DOI
StatusUdgivet - 2017

Fingeraftryk

Visual Evoked Potentials
Pleasure
Food and Beverages
Visual Cortex
Scalp
Cues
Electroencephalography
Control Groups
Power (Psychology)

Citer dette

Christoffersen, G. R. J., Laugesen, J. L., Møller, P., Bredie, W. L. P., Schachtman, T. R., Liljendahl, C., & Viemose, I. (2017). Long-term visuo-gustatory appetitive and aversive conditioning potentiate human visual evoked potentials. Frontiers in Human Neuroscience, 11, [467]. https://doi.org/10.3389/fnhum.2017.00467
Christoffersen, Gert R.J. ; Laugesen, Jakob L. ; Møller, Per ; Bredie, Wender L.P. ; Schachtman, Todd R. ; Liljendahl, Christina ; Viemose, Ida. / Long-term visuo-gustatory appetitive and aversive conditioning potentiate human visual evoked potentials. I: Frontiers in Human Neuroscience. 2017 ; Bind 11.
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title = "Long-term visuo-gustatory appetitive and aversive conditioning potentiate human visual evoked potentials",
abstract = "Human recognition of foods and beverages are often based on visual cues associated with flavors. The dynamics of neurophysiological plasticity related to acquisition of such long-term associations has only recently become the target of investigation. In the present work, the effects of appetitive and aversive visuo-gustatory conditioning were studied with high density EEG-recordings focusing on late components in the visual evoked potentials (VEPs), specifically the N2-P3 waves. Unfamiliar images were paired with either a pleasant or an unpleasant juice and VEPs evoked by the images were compared before and 1 day after the pairings. In electrodes located over posterior visual cortex areas, the following changes were observed after conditioning: the amplitude from the N2-peak to the P3-peak increased and the N2 peak delay was reduced. The percentage increase of N2-to-P3 amplitudes was asymmetrically distributed over the posterior hemispheres despite the fact that the images were bilaterally symmetrical across the two visual hemifields. The percentage increases of N2-to-P3 amplitudes in each experimental subject correlated with the subject’s evaluation of positive or negative hedonic valences of the two juices. The results from 118 scalp electrodes gave surface maps of theta power distributions showing increased power over posterior visual areas after the pairings. Source current distributions calculated from swLORETA revealed that visual evoked currents rose as a result of conditioning in five cortical regions—from primary visual areas and into the inferior temporal gyrus (ITG). These learning-induced changes were seen after both appetitive and aversive training while a sham trained control group showed no changes. It is concluded that long-term visuo-gustatory conditioning potentiated the N2-P3 complex, and it is suggested that the changes are regulated by the perceived hedonic valence of the US.",
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author = "Christoffersen, {Gert R.J.} and Laugesen, {Jakob L.} and Per M{\o}ller and Bredie, {Wender L.P.} and Schachtman, {Todd R.} and Christina Liljendahl and Ida Viemose",
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Christoffersen, GRJ, Laugesen, JL, Møller, P, Bredie, WLP, Schachtman, TR, Liljendahl, C & Viemose, I 2017, 'Long-term visuo-gustatory appetitive and aversive conditioning potentiate human visual evoked potentials', Frontiers in Human Neuroscience, bind 11, 467. https://doi.org/10.3389/fnhum.2017.00467

Long-term visuo-gustatory appetitive and aversive conditioning potentiate human visual evoked potentials. / Christoffersen, Gert R.J.; Laugesen, Jakob L.; Møller, Per; Bredie, Wender L.P.; Schachtman, Todd R.; Liljendahl, Christina; Viemose, Ida.

I: Frontiers in Human Neuroscience, Bind 11, 467, 2017.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Long-term visuo-gustatory appetitive and aversive conditioning potentiate human visual evoked potentials

AU - Christoffersen, Gert R.J.

AU - Laugesen, Jakob L.

AU - Møller, Per

AU - Bredie, Wender L.P.

AU - Schachtman, Todd R.

AU - Liljendahl, Christina

AU - Viemose, Ida

PY - 2017

Y1 - 2017

N2 - Human recognition of foods and beverages are often based on visual cues associated with flavors. The dynamics of neurophysiological plasticity related to acquisition of such long-term associations has only recently become the target of investigation. In the present work, the effects of appetitive and aversive visuo-gustatory conditioning were studied with high density EEG-recordings focusing on late components in the visual evoked potentials (VEPs), specifically the N2-P3 waves. Unfamiliar images were paired with either a pleasant or an unpleasant juice and VEPs evoked by the images were compared before and 1 day after the pairings. In electrodes located over posterior visual cortex areas, the following changes were observed after conditioning: the amplitude from the N2-peak to the P3-peak increased and the N2 peak delay was reduced. The percentage increase of N2-to-P3 amplitudes was asymmetrically distributed over the posterior hemispheres despite the fact that the images were bilaterally symmetrical across the two visual hemifields. The percentage increases of N2-to-P3 amplitudes in each experimental subject correlated with the subject’s evaluation of positive or negative hedonic valences of the two juices. The results from 118 scalp electrodes gave surface maps of theta power distributions showing increased power over posterior visual areas after the pairings. Source current distributions calculated from swLORETA revealed that visual evoked currents rose as a result of conditioning in five cortical regions—from primary visual areas and into the inferior temporal gyrus (ITG). These learning-induced changes were seen after both appetitive and aversive training while a sham trained control group showed no changes. It is concluded that long-term visuo-gustatory conditioning potentiated the N2-P3 complex, and it is suggested that the changes are regulated by the perceived hedonic valence of the US.

AB - Human recognition of foods and beverages are often based on visual cues associated with flavors. The dynamics of neurophysiological plasticity related to acquisition of such long-term associations has only recently become the target of investigation. In the present work, the effects of appetitive and aversive visuo-gustatory conditioning were studied with high density EEG-recordings focusing on late components in the visual evoked potentials (VEPs), specifically the N2-P3 waves. Unfamiliar images were paired with either a pleasant or an unpleasant juice and VEPs evoked by the images were compared before and 1 day after the pairings. In electrodes located over posterior visual cortex areas, the following changes were observed after conditioning: the amplitude from the N2-peak to the P3-peak increased and the N2 peak delay was reduced. The percentage increase of N2-to-P3 amplitudes was asymmetrically distributed over the posterior hemispheres despite the fact that the images were bilaterally symmetrical across the two visual hemifields. The percentage increases of N2-to-P3 amplitudes in each experimental subject correlated with the subject’s evaluation of positive or negative hedonic valences of the two juices. The results from 118 scalp electrodes gave surface maps of theta power distributions showing increased power over posterior visual areas after the pairings. Source current distributions calculated from swLORETA revealed that visual evoked currents rose as a result of conditioning in five cortical regions—from primary visual areas and into the inferior temporal gyrus (ITG). These learning-induced changes were seen after both appetitive and aversive training while a sham trained control group showed no changes. It is concluded that long-term visuo-gustatory conditioning potentiated the N2-P3 complex, and it is suggested that the changes are regulated by the perceived hedonic valence of the US.

KW - Conditioning

KW - EEG

KW - Gustatory

KW - Human brain

KW - Visual evoked potentials

U2 - 10.3389/fnhum.2017.00467

DO - 10.3389/fnhum.2017.00467

M3 - Journal article

VL - 11

JO - Frontiers in Human Neuroscience

JF - Frontiers in Human Neuroscience

SN - 1662-5161

M1 - 467

ER -