receive monetary reward (i.e., dollar bills or lottery

tickets).

 The specific objectives of this study are to determine:

 (a) whether patients with RHD or LHD become autonomically

 aroused in these in vivo emotional situations (as indexed by

 HR and SCR changes); (b) whether they display contraction of

 facial muscles (as measured by EMG indices) that correspond

 to the positive-negative nature of the emotional situation;

 and (c) whether they explicitly report subjective changes in

 their emotional experiences (as measured by their responses

 to questionnaires).

 According to the global right hemisphere emotion model,

the RHD patients should display attenuated responsivity

across all three response domains (arousal, facial, verbal

report) in both the negative and positive emotion-eliciting

situations. In other words, relative to the LHD group, the

RHD patients should be less autonomically aroused, show

minimal facial muscle contractions, and report less intense

changes in their subjective experience of emotion.

Diminished responding by RHD patients would be observed in

both the anticipatory anxiety paradigm, as well as the

anticipatory reward task.

 According to the bivalent hemisphere emotion model, the

responses of the RHD and LHD patients would vary as a

function of the positive-negative nature of the induced

emotional situation. Specifically, the RHD group would show