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This paper describes the neuropilar areas of the thoracic ganglia of locusts ( Locusta migratoria ) in which projections from mechanoreceptors terminate. Reference transverse, sagittal and parasagittal sections through a meso- and metathoracic ganglion illustrate the relation of these neuropiles to known structures such as longitudinal tracts and commissures. The ventral association centres (VAC), divided into anterior (aVAC), medial (mVAC), ventralmost (vVAC) and lateral (IVAC) parts, receive terminals from tactile hairs (H; aVAC, vVAC and IVAC) and chordotonal organs (CO; mVAC). Newly defined neuropilar areas are the lateral association centres (LAC) which are divided into an anterior (aLAC) and posterior part (pLAC). These receive projections from hair plates (HP), campaniform sensilla (CS), multipolar sensory cells (MS), strand receptors (SR) and chordotonal organs (CO). In contrast to the VACs they also contain fibres of motorneurons.

Our findings suggest that BD-II, OCD, dysthymia, and suicidality cluster together in some subjects with BD. We discuss the clinical implications of our findings.

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To investigate the differences between schizophrenic subjects with and without obsessive-compulsive disorder (OCD), the authors systematically assessed 76 schizophrenic subjects for OCD. Subjects with and without OCD were then compared with regard to motor symptoms, including catatonia, and several measures of psychopathology. Treatment strategies were evaluated retrospectively. The 12 subjects with OCD (15.8%) had more motor symptoms, including catatonia, than non-OCD schizophrenic subjects. Some differences were found with regard to psychopathological symptoms. Treatment strategies also differed in the two groups. The high prevalence of motor symptoms in these subjects supports the hypothesis of a basal ganglia-frontal lobe connection linking OCD with schizophrenia.