PSYC 220 Lecture Notes - Lecture 22: Epiphenomenon, Verbal Behavior, Linguistic Universal
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Study question: neuropsychological results show a double dissociation between perception and imagery, nevertheless several experiments show parallels between the two. Imagery neurons: single cell recording (kreiman et al. 2000)- number of epileptic patients going into surgery with focal epilepsy, measured response in. 276 neurons: electrodes implanted in enterhinal cortex. Showed pictures of a ball or asked o imagine it, the. One that produced imagery (activity in occipital lobe- visual processing) Activity spreads out with larger pictures (fig 10. 14: overlaps in active brain regions. Amedi et al (2005) (we turn down the auditory & motor parts of the brain when we visually imagine something- areas of overlap, deactivation of auditory cortex: lee et al (2012) Activity in higher visual areas when imagining. Transcranial magnetic stimulation: pylyshyn imagery is an epiphenomenon, brain activity as epiphenomenal, kosslyn et al (1999, tms to visual cortex. Visual discrimination given 4 pictures & asked questions about them.
