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Oscillatory correlates of threat imminence during virtual navigation.

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Title: Oscillatory correlates of threat imminence during virtual navigation.
Authors: Karpov, Galit (AUTHOR), Lin, Mei‐Heng (AUTHOR), Headley, Drew B. (AUTHOR), Baker, Travis E. (AUTHOR)
Source: Psychophysiology. Jul2024, Vol. 61 Issue 7, p1-22. 22p.
Subjects: Young adults, Defensiveness (Psychology), Virtual reality, Electrophysiology, Electroencephalography
Abstract: The Predatory Imminence Continuum Theory proposes that defensive behaviors depend on the proximity of a threat. While the neural mechanisms underlying this proposal are well studied in animal models, it remains poorly understood in humans. To address this issue, we recorded EEG from 24 (15 female) young adults engaged in a first‐person virtual reality Risk–Reward interaction task. On each trial, participants were placed in a virtual room and presented with either a threat or reward conditioned stimulus (CS) in the same room location (proximal) or different room location (distal). Behaviorally, all participants learned to avoid the threat‐CS, with most using the optimal behavior to actively avoid the proximal threat‐CS (88% accuracy) and passively avoid the distal threat‐CS (69% accuracy). Similarly, participants learned to actively approach the distal reward‐CS (82% accuracy) and to remain passive to the proximal reward‐CS (72% accuracy). At an electrophysiological level, we observed a general increase in theta power (4–8 Hz) over the right posterior channel P8 across all conditions, with the proximal threat‐CS evoking the largest theta response. By contrast, distal cues induced two bursts of gamma (30–60 Hz) power over midline‐parietal channel Pz (200 msec post‐cue) and right frontal channel Fp2 (300 msec post‐cue). Interestingly, the first burst of gamma power was sensitive to the distal threat‐CS and the second burst at channel Fp2 was sensitive to the distal reward‐CS. Together, these findings demonstrate that oscillatory processes differentiate between the spatial proximity information during threat and reward encoding, likely optimizing the selection of the appropriate behavioral response. We demonstrate that gamma and theta oscillatory activity differentiate between real‐life spatial proximity information and actions during threat and reward encoding, providing novel support for the Predatory Imminence Continuum Theory. Such knowledge could have implications for stress‐related disorders that may depend on separable domains of threat dysfunction. [ABSTRACT FROM AUTHOR]
Copyright of Psychophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Oscillatory correlates of threat imminence during virtual navigation.
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  Data: <searchLink fieldCode="AR" term="%22Karpov%2C+Galit%22">Karpov, Galit</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lin%2C+Mei‐Heng%22">Lin, Mei‐Heng</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Headley%2C+Drew+B%2E%22">Headley, Drew B.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Baker%2C+Travis+E%2E%22">Baker, Travis E.</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Psychophysiology%22">Psychophysiology</searchLink>. Jul2024, Vol. 61 Issue 7, p1-22. 22p.
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  Data: <searchLink fieldCode="DE" term="%22Young+adults%22">Young adults</searchLink><br /><searchLink fieldCode="DE" term="%22Defensiveness+%28Psychology%29%22">Defensiveness (Psychology)</searchLink><br /><searchLink fieldCode="DE" term="%22Virtual+reality%22">Virtual reality</searchLink><br /><searchLink fieldCode="DE" term="%22Electrophysiology%22">Electrophysiology</searchLink><br /><searchLink fieldCode="DE" term="%22Electroencephalography%22">Electroencephalography</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The Predatory Imminence Continuum Theory proposes that defensive behaviors depend on the proximity of a threat. While the neural mechanisms underlying this proposal are well studied in animal models, it remains poorly understood in humans. To address this issue, we recorded EEG from 24 (15 female) young adults engaged in a first‐person virtual reality Risk–Reward interaction task. On each trial, participants were placed in a virtual room and presented with either a threat or reward conditioned stimulus (CS) in the same room location (proximal) or different room location (distal). Behaviorally, all participants learned to avoid the threat‐CS, with most using the optimal behavior to actively avoid the proximal threat‐CS (88% accuracy) and passively avoid the distal threat‐CS (69% accuracy). Similarly, participants learned to actively approach the distal reward‐CS (82% accuracy) and to remain passive to the proximal reward‐CS (72% accuracy). At an electrophysiological level, we observed a general increase in theta power (4–8 Hz) over the right posterior channel P8 across all conditions, with the proximal threat‐CS evoking the largest theta response. By contrast, distal cues induced two bursts of gamma (30–60 Hz) power over midline‐parietal channel Pz (200 msec post‐cue) and right frontal channel Fp2 (300 msec post‐cue). Interestingly, the first burst of gamma power was sensitive to the distal threat‐CS and the second burst at channel Fp2 was sensitive to the distal reward‐CS. Together, these findings demonstrate that oscillatory processes differentiate between the spatial proximity information during threat and reward encoding, likely optimizing the selection of the appropriate behavioral response. We demonstrate that gamma and theta oscillatory activity differentiate between real‐life spatial proximity information and actions during threat and reward encoding, providing novel support for the Predatory Imminence Continuum Theory. Such knowledge could have implications for stress‐related disorders that may depend on separable domains of threat dysfunction. [ABSTRACT FROM AUTHOR]
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  Label:
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  Data: <i>Copyright of Psychophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1111/psyp.14551
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        Text: English
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              Text: Jul2024
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              Y: 2024
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