SLOW POTENTIAL WAVES IN THE HUMAN BRAIN ASSOCIATED WITH EXPECTANCY, ATTENTION AND DECISION.

摘要: 1. Stimuli in any modality evoke responses over wide regions of frontal non-specific human cortex. 2. When identical stimuli are monotonously repeated these diminish irregularly and finally disappear. 3. When presented frequently association, the to first or conditional amplified while those second indicative attenuated. 4. When a subject is instructed perform relevant operant action “imperative” stimulus primary response followed by prolonged negative wave which submerges component imperative response. 5. The linking described as an Expectancy Wave (E-wave) because it reflects very accurately attitude association his intention act on it. 6. Comparison intra-cranial scalp records suggests that E-wave arises from depolarisation small proportion apical dendrites premotor cortex. 7. Development accompanied economical abbreviation motor reaction time synchronisation restriction efferent volleys. 8. When withdrawn (extinction) without warning subsides slowly about 50 trials normal adults. However, when previous verbal given disappears at once. 9. When significance between diluted presenting unreinforced (equivocation) diminished accordingly adults vanishes probability falls 0.5. 10. Stimuli involving no energy transfer but with high information content E-waves long considers signals interesting important, whether they isolated, conditional. 11. The seems indicate subjective assigned particular person signal “Gestalt” used for experiment. The thus determined includes need recognition decision, involves social well physiological influences.