49416
document
Delayed perceptual awareness in rapid perceptual decisions . The flourishing of studies on the neural correlates of decision-making calls for an appraisal of the relation between perceptual decisions and conscious perception . By exploiting the long integration time of noisy motion stimuli , and by forcing human observers to make difficult speeded decisions -- sometimes a blind guess -- about stimulus direction , we traced the temporal buildup of motion discrimination capability and perceptual awareness , as assessed trial by trial through direct rating . We found that both increased gradually with motion coherence and viewing time , but discrimination was systematically leading awareness , reaching a plateau much earlier . Sensitivity and criterion changes contributed jointly to the slow buildup of perceptual awareness . It made no difference whether motion discrimination was accomplished by saccades or verbal responses . These findings suggest that perceptual awareness emerges on the top of a developing or even mature perceptual decision . We argue that the middle temporal ( MT ) cortical region does not confer us the full phenomenic depth of motion perception , although it may represent a precursor stage in building our subjective sense of visual motion .
49417
Intervention_Educational
long integration time of noisy motion stimuli
49418
Intervention_Educational
forcing human observers to make difficult speeded decisions -- sometimes a blind guess -- about stimulus direction
49419
Outcome_Mental
motion coherence and viewing time
49420
Outcome_Mental
discrimination was systematically leading awareness , reaching a plateau much earlier .
49421
Outcome_Mental
slow buildup of perceptual awareness .
49422
Outcome_Mental
motion discrimination
49423
Outcome_Mental
saccades or verbal responses .
49424
Outcome_Mental
perceptual awareness emerges on the top of a developing or even mature perceptual decision .
49425
Outcome_Mental
full phenomenic depth of motion perception
49426
Outcome_Mental
precursor stage in building our subjective sense of visual motion .
49427
Participant_Condition
Delayed perceptual awareness
49428
Participant_Condition
rapid perceptual decisions .