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Affective self-report during the intracarotid sodium amobarbital test: group differences
G L Ahern1, A M Herring, D M Labiner
1Behavioral Neuroscience and Alzheimer's Clinic, University of Arizona Health Sciences Center, Tucson 85724, USA. gahern@u.arizona.edu
Journal of the International Neuropsychological Society : JINS
|September 30, 2000
Summary
Emotional reactions during hemisphere inactivation tests vary. Some patients show opposite affective responses, possibly due to asymmetrical temporal lobe lesions, impacting theories of brain lateralization for emotion.
Area of Science:
- Neuroscience
- Psychology
- Cerebral Lateralization
Background:
- Emotional reactions are observed during intracarotid sodium amobarbital tests.
- Hemisphere inactivation can lead to distinct affective responses, such as euphoria or catastrophic reactions.
Purpose of the Study:
- To replicate previous findings on affective self-report during hemisphere inactivation.
- To investigate group differences in emotional responses during the intracarotid sodium amobarbital test.
- To explore the relationship between lesion distribution and emotional responses.
Main Methods:
- Intracarotid sodium amobarbital test (Wada test) was administered.
- Affective self-report was measured during left and right hemisphere inactivation.
- Participants were grouped based on their emotional response patterns.
Main Results:
- A 'right way' group showed expected affective changes, while a 'wrong way' group displayed diametrically opposite responses.
- Asymmetrical left and right temporal lobe lesions distinguished the 'wrong way' group.
- The degree of left hemisphere inactivation differentiated the 'right way' from the 'no change' group.
Conclusions:
- Findings challenge existing theories of cerebral lateralization for emotion.
- Methodological considerations in studying hemisphere function and emotion are highlighted.
- Lesion asymmetry and inactivation degree are critical factors influencing emotional reporting.