Michael Gazzaniga ha realizado contribuciones significativas en este campo, especialmente a través de su trabajo con pacientes con el cerebro dividido (o corpus callosotomía), en los que se ha cortado el cuerpo calloso, la principal vía de comunicación entre los hemisferios cerebrales izquierdo y derecho. Sus estudios con estos pacientes han revelado mucho sobre la lateralización de las funciones cerebrales y la naturaleza de la conciencia.
| Chapter Theme | Key Experiments / Case Studies | |-----------------------------|-------------------------------------| | History & Methods | Phineas Gage, HM, Broca’s patient Tan | | Visual Perception | Ungerleider & Mishkin (what vs where) | | Attention | Bisiach & Luzzatti (neglect) | | Memory | Scoville & Milner (HM), KF case | | Language | Dronkers (Broca’s area fMRI) | | Executive Function | Wisconsin Card Sorting Task | | Emotion | Damasio (somatic marker hypothesis) | | Consciousness | Sperry & Gazzaniga (split-brain) | | Social Neuroscience | Rizzolatti (mirror neurons) | Neurociencia Cognitiva Gazzaniga.pdf
The left hemisphere did not say, "I have no idea." Instead, it invented a plausible story to explain the right hemisphere’s action. Gazzaniga called this the Interpreter . It takes disparate, even contradictory, information and weaves it into a coherent narrative. Gazzaniga called this the Interpreter
Gazzaniga's work on patients with PFC damage has shown that the PFC is essential for executive functions, such as planning and decision-making. Patients with PFC damage often exhibit impulsive behavior, difficulty with planning, and an inability to adapt to changing situations. Patients with PFC damage often exhibit impulsive behavior,
Antonio Damasio’s work (integrated into Gazzaniga’s framework) shows that without emotions (via the ventromedial prefrontal cortex), you cannot make rational decisions. Patients with damage here can list all the pros and cons of a choice endlessly but never decide—the Iowa Gambling Task demonstrates this. Gut feelings are not obstacles to reason; they are the engine of reason.