New insight into internal noise in the psychophysical model for visual signal detection

1994 ◽  
Author(s):  
Mikhael I. Trifonov
Keyword(s):  
Signal Detection ◽  
Internal Noise ◽  
Visual Signal ◽  
Insight Into

scholarly journals Vortioxetine Differentially Modulates MK-801-Induced Changes in Visual Signal Detection Task Performance and Locomotor Activity

2018 ◽  
Vol 9 ◽  
Author(s):  
Todd M. Hillhouse ◽  
Christina R. Merritt ◽  
Douglas A. Smith ◽  
Manuel Cajina ◽  
Connie Sanchez ◽  
...  
Keyword(s):  
Locomotor Activity ◽  
Signal Detection ◽  
Task Performance ◽  
Detection Task ◽  
Visual Signal ◽  
Mk 801 ◽  
Signal Detection Task ◽  
Induced Changes

scholarly journals When True Recognition Suppresses False Recognition: Evidence from Amnesic Patients

1998 ◽  
Vol 10 (6) ◽  
pp. 668-679 ◽  
Author(s):  
Daniel L. Schacter ◽  
Mieke Verfaellie ◽  
Michael D. Anes ◽  
Carrie Racine
Keyword(s):  
Episodic Memory ◽  
Signal Detection ◽  
Study List ◽  
False Recognition ◽  
Present Experiment ◽  
Healthy Controls ◽  
Repeated Presentation ◽  
Control Subjects ◽  
Insight Into ◽  
Normal Controls

False recognition occurs when people mistakenly claim that a novel item is familiar. After studying lists of semantically related words, healthy controls show extraordinarily high levels of false recognition to nonstudied lures that are semantic associates of study list words. In previous experiments, we found that both Korsakoff and non-Korsakoff amnesic patients show reduced levels of false recognition to semantic associates, implying that the medial temporal/diencephalic structures that are damaged in amnesic patients are involved in the encoding and/or retrieval of information that underlies false recognition. These data contrast with earlier results indicating greater false recognition in Korsakoff amnesics than in control subjects. The present experiment tests the hypothesis that greater or lesser false recognition of semantic associates in amnesic patients, relative to normal controls, can be demonstrated by creating conditions that are more or less conducive to allowing true recognition to suppress false recognition. With repeated presentation and testing of lists of semantic associates, control subjects and both Korsakoff and non-Korsakoff amnesics showed increasing levels of true recognition across trials. However, control subjects exhibited decreasing levels of false recognition across trials, whereas Korsakoff amnesic patients showed increases across trials and non-Korsakoff amnesics showed a fluctuating pattern. Consideration of signal detection analyses and differences between the two types of amnesic patients provides insight into how mechanisms of veridical episodic memory can be used to suppress false recognition.

Visual Signal Detection Measured by Event-Related Potentials

2001 ◽  
Vol 46 (3) ◽  
pp. 342-356 ◽  
Author(s):  
Mick Hunter ◽  
Alyna Turner ◽  
W.Ross Fulham
Keyword(s):  
Signal Detection ◽  
Event Related Potentials ◽  
Visual Signal ◽  
Related Potentials
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