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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Neurobiol Learn Mem. 2016 Jul 26;135:27–39. doi: 10.1016/j.nlm.2016.07.025

Table 2.

Description of publications using cell-type specific methodologies to query fear related circuitry.

Publication Investigated Circuitry

Kravitz et al. (2012) Optical activation of D1 direct/D2 indirect pathway supports place preference/place avoidance.
Ciocchi et al. (2010) and Haubensak et al. (2010) Identified PKCd + population as decreasing firing during fear conditioning, relieving inhibition of PAG projecting CeM population, supporting fear expression.
Botta et al. (2015) Activity in CeL PKCd population supports fear generalization and tonic activity in these neurons is dynamically regulated by extrasyaptic α5-GABAAR.
Cai et al. (2014) Activation of CeL PKCd neurons is acutely anxiolytic.
Halhong Li et al. (2013) SOM+ neurons of CeL represent opposing population to PKCd population; increasing activity with fear learning. Activity in these neurons is sufficient to support spontaneous freezing.
Andero et al. (2014) CeA Tac2 neurons are necessary for fear acquisition. Antagonism of Tac2 receptor is sufficient to block fear consolidation.
Han et al. (2015) PBN→ CeA transmits US information. Inhibition of PBN CGRP neurons blocks FC while activation is sufficient for generation of fear responses.
Likhtik et al. (2008) Ablation of ITCm is sufficient to impair expression of extinction.
Wolff et al. (2014) PV and SOM neurons in the BLA create disinhibitory circuit gating cortical and thalamic inputs to principal neurons.
Jasnow et al. (2013) Activation of BLA Thy1-ChR2 population is sufficient to block fear acquisition and enhance fear extinction.
Knobloch et al. (2012) Activation of hypothalamic OT fibers in CeL is sufficient to increase feed-forward inhibition of CeM in an OT dependent manner.
Lee H et al. (2014) ESR1 neurons in the VMHvl generate investigative/mounting/attack behaviors in an intensity/recruitment dependent manner.
Kunwar et al. (2015) SF1 neurons of the VMHdm/c generate freezing/escape behaviors in an intensity/recruitment dependent manner.
Huff et al. (2016) Activation of BLA→ vHPC projections is sufficient to support aversive learning, but not contextual learning.