The purpose of this study is to examine which event-related potentials (ERPs) and event-related oscillations (EROs) are associated with fear conditioning, avoidance learning, and memory recall for fear and avoidance, where are the source generators of the observed scalp EEG activity, the impact of fear and avoidance learning on the decision to avoid or not to avoid conditioned stimuli , to examine the large-scale functional connectivity across distributed brain regions across experimental phases, and to examine whether spontaneous EEG data during resting-state correlate with the EEG measures during experimental tasks.
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Skin Conductance Response (SCR) during the image familiarization phase (viewing phase)
Timeframe: During the image familiarization/viewing phase (about 15 minutes total)
Skin Conductance Response (SCR) during the fear conditioning phase
Timeframe: During the fear conditioning phase (about 18 minutes total)
Skin Conductance Response (SCR) during the avoidance learning phase
Timeframe: During the avoidance learning phase (about 18 minutes total)
Skin Conductance Response (SCR) during the memory recall phase
Timeframe: During the memory recall phase (about 18 minutes total)
Skin Conductance Response (SCR) during resting state
Timeframe: Immediately Before the Viewing Phase on day 1
Skin Conductance Response (SCR) during resting state
Timeframe: Immediately After the Viewing Phase (day 1 about 15 minutes after start of viewing phase)
Skin Conductance Response (SCR) during resting state
Timeframe: Immediately Before the fear conditioning Phase (day 1 about 20 minutes after start of viewing phase)
Skin Conductance Response (SCR) during resting state
Timeframe: Immediately After the fear conditioning Phase (day 1 about 38 minutes after start of viewing phase)
Skin Conductance Response (SCR) during resting state
Timeframe: Immediately Before the avoidance learning phase (day 1 about 43 minutes after start of viewing phase)
Skin Conductance Response (SCR) during resting state
Timeframe: Immediately after the avoidance learning phase (day 1 about 61 minutes after start of viewing phase)
Skin Conductance Response (SCR) during resting state
Timeframe: Immediately Before the memory recall phase on day 2 (about 1 day after start of viewing phase)
Skin Conductance Response (SCR) during resting state
Timeframe: Immediately after the memory recall phase (day 2 about 1 day 18 minutes after start of memory recall phase)
Number of participants who had higher event-related potentials (ERPs) in response to CS+ categories relative to CS- categories, as assessed by electroencephalogram (EEG) during the image familiarization phase (viewing phase)
Timeframe: During the image familiarization/viewing phase (about 15 minutes total)
Number of participants who had higher event-related potentials (ERPs) in response to CS+ categories relative to CS- categories, as assessed by electroencephalogram (EEG) during the fear conditioning phase
Timeframe: During the image familiarization/viewing phase (about 15 minutes total)
Number of participants who had higher event-related potentials (ERPs) in response to CS+ categories relative to CS- categories, as assessed by electroencephalogram (EEG) during the avoidance learning phase
Timeframe: During the avoidance learning phase (about 18 minutes total)
Number of participants who had higher event-related potentials (ERPs) in response to CS+ categories relative to CS- categories, as assessed by electroencephalogram (EEG) during the memory recall phase
Timeframe: During the memory recall phase (about 18 minutes total)
Spontaneous electrical activity in the brain during the resting state as assessed by electroencephalogram (EEG)
Timeframe: Immediately Before the Viewing Phase on day 1
Spontaneous electrical activity in the brain during the resting state as assessed by electroencephalogram (EEG)
Timeframe: Immediately After the Viewing Phase (day 1 about 15 minutes after start of viewing phase)
Spontaneous electrical activity in the brain during the resting state as assessed by electroencephalogram (EEG)
Timeframe: Immediately Before the fear conditioning Phase (day 1 about 20 minutes after start of viewing phase)
Spontaneous electrical activity in the brain during the resting state as assessed by electroencephalogram (EEG)
Timeframe: Immediately After the fear conditioning Phase (day 1 about 38 minutes after start of viewing phase)
Spontaneous electrical activity in the brain during the resting state as assessed by electroencephalogram (EEG)
Timeframe: Immediately Before the avoidance learning phase (day 1 about 43 minutes after start of viewing phase)
Spontaneous electrical activity in the brain during the resting state as assessed by electroencephalogram (EEG)
Timeframe: Immediately after the avoidance learning phase (day 1 about 61 minutes after start of viewing phase)
Spontaneous electrical activity in the brain during the resting state as assessed by electroencephalogram (EEG)
Timeframe: Immediately Before the memory recall phase on day 2 (about 1 day after start of viewing phase
Spontaneous electrical activity in the brain during the resting state as assessed by electroencephalogram (EEG)
Timeframe: Immediately after the memory recall phase (day 2 about 1 day 18 minutes after start of memory recall phase).
Number of times a participant pressed the button to avoid shock in response to an object category during the avoidance learning phase
Timeframe: During the avoidance learning phase (about 18 minutes total)
Number of times a participant pressed the button in response to an object category during the memory recall phase
Timeframe: During the memory recall phase (about 18 minutes total)