Spontaneous Brain Oscillations and Perceptual Decision-Making. Issue 8 (August 2020)
- Record Type:
- Journal Article
- Title:
- Spontaneous Brain Oscillations and Perceptual Decision-Making. Issue 8 (August 2020)
- Main Title:
- Spontaneous Brain Oscillations and Perceptual Decision-Making
- Authors:
- Samaha, Jason
Iemi, Luca
Haegens, Saskia
Busch, Niko A. - Abstract:
- Abstract : Making rapid decisions on the basis of sensory information is essential to everyday behaviors. Why, then, are perceptual decisions so variable despite unchanging inputs? Spontaneous neural oscillations have emerged as a key predictor of trial-to-trial perceptual variability. New work casting these effects in the framework of models of perceptual decision-making has driven novel insight into how the amplitude of spontaneous oscillations impact decision-making. This synthesis reveals that the amplitude of ongoing low-frequency oscillations (<30 Hz), particularly in the alpha-band (8–13 Hz), bias sensory responses and change conscious perception but not, surprisingly, the underlying sensitivity of perception. A key model-based insight is that various decision thresholds do not adapt to alpha-related changes in sensory activity, demonstrating a seeming suboptimality of decision mechanisms in tracking endogenous changes in sensory responses. Highlights: Spontaneous changes in low-frequency oscillatory amplitude bias moment-to-moment perceptual decisions through criterion effects, not sensitivity changes. Models of perceptual decision-making combined with neurophysiological evidence suggest that spontaneous alpha-band oscillations modulate sensory responses without changing the fidelity of stimulus representations. Criteria underlying subjective measures of perception, such as detection, visibility, and confidence, do not adapt to alpha-related changes in sensoryAbstract : Making rapid decisions on the basis of sensory information is essential to everyday behaviors. Why, then, are perceptual decisions so variable despite unchanging inputs? Spontaneous neural oscillations have emerged as a key predictor of trial-to-trial perceptual variability. New work casting these effects in the framework of models of perceptual decision-making has driven novel insight into how the amplitude of spontaneous oscillations impact decision-making. This synthesis reveals that the amplitude of ongoing low-frequency oscillations (<30 Hz), particularly in the alpha-band (8–13 Hz), bias sensory responses and change conscious perception but not, surprisingly, the underlying sensitivity of perception. A key model-based insight is that various decision thresholds do not adapt to alpha-related changes in sensory activity, demonstrating a seeming suboptimality of decision mechanisms in tracking endogenous changes in sensory responses. Highlights: Spontaneous changes in low-frequency oscillatory amplitude bias moment-to-moment perceptual decisions through criterion effects, not sensitivity changes. Models of perceptual decision-making combined with neurophysiological evidence suggest that spontaneous alpha-band oscillations modulate sensory responses without changing the fidelity of stimulus representations. Criteria underlying subjective measures of perception, such as detection, visibility, and confidence, do not adapt to alpha-related changes in sensory processing, leading to dissociations between objective and subjective aspects of perception. There is emerging support for a domain-general effect of alpha on perceptual decisions across sensory modalities. … (more)
- Is Part Of:
- Trends in cognitive sciences. Volume 24:Issue 8(2020)
- Journal:
- Trends in cognitive sciences
- Issue:
- Volume 24:Issue 8(2020)
- Issue Display:
- Volume 24, Issue 8 (2020)
- Year:
- 2020
- Volume:
- 24
- Issue:
- 8
- Issue Sort Value:
- 2020-0024-0008-0000
- Page Start:
- 639
- Page End:
- 653
- Publication Date:
- 2020-08
- Subjects:
- computational model -- signal detection theory -- electrophysiology -- perceptual awareness -- alpha oscillations
Cognitive science -- Periodicals
Cognitive neuroscience -- Periodicals
153.05 - Journal URLs:
- http://www.sciencedirect.com/science/journal/13646613 ↗
http://www.elsevier.com/journals ↗ - DOI:
- 10.1016/j.tics.2020.05.004 ↗
- Languages:
- English
- ISSNs:
- 1364-6613
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 9049.559000
British Library DSC - BLDSS-3PM
British Library STI - ELD Digital store - Ingest File:
- 14596.xml