Chunk #56 — DISCUSSION — Responses differ across axo-spinous versus axo-shaft synapses

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Endogenous GluR1-containing AMPA receptors translocate to asymmetric synapses in the lateral amygdala during the early phase of fear memory formation: an electron microscopic immunocytochemical study.

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and also more numerous, whereas the aspiny and sparsely spiny neurons belong to the inhibitory interneurons (Millhouse and DeOlmos, 1983; McDonald, 1996; McDonald et al., 2002; Muller et al., 2007, 2009; Pinard et al., 2008). In contrast, excitatory neurons, defined by their immunoreactivity to CaMKII or by their spininess, as visualized through three-dimensional reconstruction, have been observed to receive excitatory inputs along dendritic shafts (L. Ostroff and C. Farb, personal communication).