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Signatures of Conscious Processing in the Human Brain
Published on Jan 17, 20135399 Views
Understanding how brain activity leads to a conscious experience remains a major experimental challenge. I will describe a series of experiments that probe the signatures of conscious processing. In t
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Chapter list
Signatures of consciousness in the human brain00:00
Three ingredients in the study of consciousness01:48
The search for signatures of consciousness - 103:04
The search for signatures of consciousness - 203:44
The search for signatures of consciousness - 304:05
Priming reveal the depth of unconscious processing04:23
Subliminal processing can be very deep06:03
Parallel non‐conscious accumulation of semantic evidence06:13
Probing conscious access with masking07:16
A well‐defined threshold for conscious access07:57
Which ERP components correlate with visibility?09:13
Signatures of conscious access: Late ignition and long‐distance synchrony10:17
Attentional Blink paradigm11:30
Converging evidence for late conscious « ignition »13:14
3 additional signatures of conscious access14:40
The global neuronal workspace (GNW) hypothesis16:52
Detailed simulations of global ignition in a network of spiking neurons18:36
Are infants already conscious?19:58
Accumulation of evidence and ignition in the infant brain20:28
Linear and non‐linear stages in the infant brain21:14
Accumulation of evidence and ignition in the infant brain22:06
Are some cognitive processes deployed only when the stimulus is conscious?23:32
Experimental paradigm to study non‐conscious meta‐cognition and error detection25:25
Error Detection is only deployed on conscious trials25:57
Above‐chance confidence without consciousness26:58
Error negativity as a comparison of conscious intention and actual action28:47
Predictions for multivariate decoding31:12
Decoding the time course of conscious and non-conscious contents - 132:27
Decoding the time course of conscious and non-conscious contents - 233:31
Decoding the time course of conscious and non-conscious contents - 333:48
Decoding the time course of conscious and non-conscious contents - 434:07
Decoding the time course of conscious and non-conscious contents - 534:18
Consciousness: An intellectual challenge, but also a literal life-or-death problem34:34
Functional MRI can detect residual consciousness35:10
Can EEG signatures index residual consciousness? « Pinging the cortex » with two types of auditory novelties36:38
Detecting residual long-distance communication39:40
Automatic classification of patients from multiple EEG markers40:36
Conclusion: a tentative proposal for consciousness42:20