Aglioti, S. M., Tassinari, G. G., Fabri, M. M., Del Pesce, M. M., Quattrini, A. A., Manzoni, T. T., & Berlucchi, G. G. (2001). Taste laterality in the split brain. European Journal Of Neuroscience, 13(1), 195-200. doi:10.1046/j.0953-816X.2000.01378.
I chose this article because we talked about split brain in class for an extended period and I was intrigued and also confused by it and how it works. This article is on 2 patients with corpus collasum resections. The researcher is testing for discrimination for tastes stimuli (sour, bitter, and salty) applied to the right and left sides of the tongue. The researcher used three concentrations that were well over the threshold for taste recognition. They participants were each given 12 samples on both the right and left side of the tongue. They responded by pointing at words or pictures of visual stimuli that corresponded to the stimulus, a language-based discrimination. Results showed that response time was shorter for left stimuli than for right stimuli. The results also showed three major things that have been shown in previous research as well. 1. taste information from either side of the tongue canreach the left hemisphere in the absence of the corpus callosum, 2. the ipsilateral input from the tongue to the left hemisphere ismore potent functionally than the contralateral input, 3. in the normal brain, the corpus callosum, specically its posterior partincluding the splenium, appears to equalize the effects of the ipsilateral and contralateral gustatory inputs on the left hemisphere. These results show that the cerebral cortex is not needed for discriminatory responses to taste stimuli.
I found this interesting because we talked in class about not being aware of what you see or do on the opposite side of the brain that is damaged. This research shows that it also affects other areas of the senses.
http://web.ebscohost.com/ehost/pdfviewer/pdfviewer?vid=7&hid=122&sid=5133f808-49fb-4885-9d51-93c8a674de51%40sessionmgr110
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