diff --git a/src/atlasComponents/sapi/core/sapiParcellation.ts b/src/atlasComponents/sapi/core/sapiParcellation.ts
index 611b6b0dbfe51fd41ec809862b87d3558e5a29b6..4870493b3fca07ae091d68a797d760a8aa2159c9 100644
--- a/src/atlasComponents/sapi/core/sapiParcellation.ts
+++ b/src/atlasComponents/sapi/core/sapiParcellation.ts
@@ -8,6 +8,10 @@ type PaginationQuery = {
   page: number
 }
 
+type ParcellationPaginationQuery = {
+  type?: string
+}
+
 export class SAPIParcellation{
   constructor(private sapi: SAPI, public atlasId: string, public id: string){
 
@@ -36,13 +40,13 @@ export class SAPIParcellation{
     )
   }
 
-  getFeatures(param?: PaginationQuery, type?: string, queryParam?: SapiQueryParam): Observable<SapiParcellationFeatureModel[]> {
+  getFeatures(param?: PaginationQuery, parcPagination?: ParcellationPaginationQuery, queryParam?: SapiQueryParam): Observable<SapiParcellationFeatureModel[]> {
     return this.sapi.httpGet<SapiParcellationFeatureModel[]>(
       `${this.sapi.bsEndpoint}/atlases/${encodeURIComponent(this.atlasId)}/parcellations/${encodeURIComponent(this.id)}/features`,
       {
-        type: type,
-        size: param && param.size? param.size.toString() : '5',
-        page: param && param.page? param.page.toString() : '0',
+        type: parcPagination?.type,
+        size: param?.size?.toString() || '5',
+        page: param?.page?.toString() || '0',
       },
       queryParam
     )
diff --git a/src/atlasComponents/sapi/sapi.service.ts b/src/atlasComponents/sapi/sapi.service.ts
index 2adba633b59b3e91b0e760734a021d42edb92511..dbb7a06d08a1cdd3d9c6a170ec9ed5e527b56582 100644
--- a/src/atlasComponents/sapi/sapi.service.ts
+++ b/src/atlasComponents/sapi/sapi.service.ts
@@ -21,9 +21,10 @@ type RegistryType = SAPIAtlas | SAPISpace | SAPIParcellation
 @Injectable()
 export class SAPI{
   static bsEndpoint = `https://siibra-api-dev.apps-dev.hbp.eu/v1_0`
+  static modalitiesEndpoint = `https://siibra-api-dev.apps-dev.hbp.eu/v1_0/modalities`
 
   public bsEndpoint = SAPI.bsEndpoint
-  
+
   registry = {
     _map: {} as Record<string, {
       func: (...arg: any[]) => RegistryType
@@ -82,7 +83,7 @@ export class SAPI{
   }
 
   getModalities() {
-    return this.http.get('https://siibra-api-dev.apps-dev.hbp.eu/v1_0/modalities')
+    return this.http.get(SAPI.modalitiesEndpoint)
   }
 
   httpGet<T>(url: string, params?: Record<string, string>, sapiParam?: SapiQueryParam){
diff --git a/src/atlasComponents/sapiViews/core/region/module.ts b/src/atlasComponents/sapiViews/core/region/module.ts
index 60ab09fc7c34287bf3e100445b00ab64019f6545..f0e19a9bc9a82c83dc8e3501ce3f2b99ff51b7bd 100644
--- a/src/atlasComponents/sapiViews/core/region/module.ts
+++ b/src/atlasComponents/sapiViews/core/region/module.ts
@@ -17,7 +17,6 @@ import { SapiViewsCoreRegionRegionRich } from "./region/rich/region.rich.compone
     SapiViewsUtilModule,
     SapiViewsFeaturesModule,
     SpinnerModule,
-    SapiViewsFeaturesModule,
   ],
   declarations: [
     SapiViewsCoreRegionRegionListItem,
diff --git a/src/atlasComponents/sapiViews/core/region/region/rich/region.rich.component.ts b/src/atlasComponents/sapiViews/core/region/region/rich/region.rich.component.ts
index 7c8a49b2eb202a0e6a281f8b240b3da278dfcf41..f728d0ee869dc5cd56f40474f4915245eb447944 100644
--- a/src/atlasComponents/sapiViews/core/region/region/rich/region.rich.component.ts
+++ b/src/atlasComponents/sapiViews/core/region/region/rich/region.rich.component.ts
@@ -38,7 +38,7 @@ export class SapiViewsCoreRegionRegionRich extends SapiViewsCoreRegionRegionBase
 
   // eslint-disable-next-line  @typescript-eslint/no-empty-function
   handleExpansionPanelClosedEv(title: string){
-    this.expandedPanel = ''
+    this.expandedPanel = null
   }
 
   // eslint-disable-next-line  @typescript-eslint/no-empty-function
diff --git a/src/atlasComponents/sapiViews/core/region/region/rich/region.rich.stories.ts b/src/atlasComponents/sapiViews/core/region/region/rich/region.rich.stories.ts
index 6e9f8907cd68facc3c60f31b6e28cadbb4873573..662a98325822bcfe069a3f8a4465dfb251e1af56 100644
--- a/src/atlasComponents/sapiViews/core/region/region/rich/region.rich.stories.ts
+++ b/src/atlasComponents/sapiViews/core/region/region/rich/region.rich.stories.ts
@@ -6,6 +6,9 @@ import { getHoc1Right, getHumanAtlas, getJba29, getJba29Regions, getMni152, prov
 import { SapiViewsCoreRegionModule } from "../../module"
 import { SapiViewsCoreRegionRegionRich } from "./region.rich.component"
 import { action } from '@storybook/addon-actions';
+import {CUSTOM_ELEMENTS_SCHEMA} from "@angular/core";
+import {AngularMaterialModule} from "src/sharedModules";
+import {provideMockStore} from "@ngrx/store/testing";
 
 const actionsData = {
   onNavigateTo: action('onNavigateTo'),
@@ -20,11 +23,16 @@ export default {
         CommonModule,
         HttpClientModule,
         SapiViewsCoreRegionModule,
+        AngularMaterialModule,
       ],
       providers: [
         SAPI,
+        provideMockStore(),
         ...provideDarkTheme,
       ],
+      schemas: [
+        CUSTOM_ELEMENTS_SCHEMA,
+      ],
       declarations: []
     })
   ],
diff --git a/src/atlasComponents/sapiViews/core/region/region/rich/region.rich.template.html b/src/atlasComponents/sapiViews/core/region/region/rich/region.rich.template.html
index f7dce340e451e6c25673241d7c82984372ae7445..22ebc5640a5a7c9787f51d44e4cdfd9068558018 100644
--- a/src/atlasComponents/sapiViews/core/region/region/rich/region.rich.template.html
+++ b/src/atlasComponents/sapiViews/core/region/region/rich/region.rich.template.html
@@ -96,8 +96,7 @@
 <mat-accordion class="d-block mt-2">
 
   <!-- connectivity -->
-  <ng-template #sxplrSapiviewsFeaturesConnectivityBrowser
-               let-contentAttribute="contentAttribute">
+  <ng-template #sxplrSapiviewsFeaturesConnectivityBrowser>
     <sxplr-sapiviews-features-connectivity-browser class="pe-all flex-shrink-1"
                                                    [region]="region"
                                                    [types]="hasConnectivityDirective.availableModalities"
@@ -113,7 +112,6 @@
     title: CONST.CONNECTIVITY,
     iconClass: 'fab fa-connectdevelop',
     content: sxplrSapiviewsFeaturesConnectivityBrowser,
-    contentAttribute: {types: hasConnectivityDirective.availableModalities, defaultProfile: hasConnectivityDirective.defaultProfile},
     desc: hasConnectivityDirective.connectivityNumber,
     iconTooltip: hasConnectivityDirective.connectivityNumber + 'Connections',
     iavNgIf: hasConnectivityDirective.hasConnectivity
@@ -177,9 +175,3 @@
     </ng-template>
   </mat-expansion-panel>
 </ng-template>
-
-<!-- fall back if region is not provided -->
-
-<ng-template [ngIf]="!region">
-  Region must be provided!
-</ng-template>
diff --git a/src/atlasComponents/sapiViews/features/connectivity/connectivityBrowser/connectivityBrowser.component.ts b/src/atlasComponents/sapiViews/features/connectivity/connectivityBrowser/connectivityBrowser.component.ts
index f0f1e500298d53bf11f8c5045095501c6b8a97b4..cac404103d18848006a3b27c969d322e111bafcc 100644
--- a/src/atlasComponents/sapiViews/features/connectivity/connectivityBrowser/connectivityBrowser.component.ts
+++ b/src/atlasComponents/sapiViews/features/connectivity/connectivityBrowser/connectivityBrowser.component.ts
@@ -193,7 +193,7 @@ export class ConnectivityBrowserComponent implements AfterViewInit, OnDestroy {
       this.fetching = true
       const type = this.types.find(t => t.name === this.selectedType).types[0]
       return this.sapi.getParcellation(this.atlas["@id"], this.parcellation["@id"])
-        .getFeatures({page: this.pageNumber, size: 1}, type)
+        .getFeatures({page: this.pageNumber, size: 1}, {type})
         .pipe(
           take(1),
           catchError(() => {
diff --git a/src/atlasComponents/sapiViews/features/connectivity/connectivityBrowser/exampleConnectivity.stories.ts b/src/atlasComponents/sapiViews/features/connectivity/connectivityBrowser/connectivityBrowser.stories.ts
similarity index 71%
rename from src/atlasComponents/sapiViews/features/connectivity/connectivityBrowser/exampleConnectivity.stories.ts
rename to src/atlasComponents/sapiViews/features/connectivity/connectivityBrowser/connectivityBrowser.stories.ts
index 2930574bd2ad93d8a6e173d04d539f8d95ff6b05..47c3ced7397945c9934ab9f92fcb00c5fcf51d90 100644
--- a/src/atlasComponents/sapiViews/features/connectivity/connectivityBrowser/exampleConnectivity.stories.ts
+++ b/src/atlasComponents/sapiViews/features/connectivity/connectivityBrowser/connectivityBrowser.stories.ts
@@ -1,6 +1,6 @@
 import { CommonModule } from "@angular/common"
 import { HttpClientModule } from "@angular/common/http"
-import {Component, CUSTOM_ELEMENTS_SCHEMA} from "@angular/core"
+import {ChangeDetectorRef, Component, CUSTOM_ELEMENTS_SCHEMA} from "@angular/core"
 import { FormsModule } from "@angular/forms"
 import { BrowserAnimationsModule } from "@angular/platform-browser/animations"
 import { Meta, moduleMetadata, Story } from "@storybook/angular"
@@ -10,26 +10,29 @@ import {SapiParcellationFeatureMatrixModel, SapiParcellationFeatureModel} from "
 import { AngularMaterialModule } from "src/sharedModules"
 import {ConnectivityBrowserComponent} from "src/atlasComponents/sapiViews/features/connectivity";
 import {PARSE_TYPEDARRAY} from "src/atlasComponents/sapi/sapi.service";
-import { take } from "rxjs/operators"
+import {catchError, take} from "rxjs/operators"
+import {of} from "rxjs";
 
 @Component({
   selector: 'autoradiograph-wrapper-cmp',
   template: `
-  <mat-form-field appearance="fill">
-    <mat-select [(ngModel)]="featureId" (selectionChange)="fetchConnectivity()">
-      <mat-option value="null" disabled>
-        --select--
-      </mat-option>
-
-      <mat-option [value]="feat['@id']"
-        *ngFor="let feat of features">
-        {{ feat.name }}
-      </mat-option>
-    </mat-select>
-  </mat-form-field>
-  
+    
+  <button mat-button (click)="datasetSliderChanged(1)" class="mb-3">Load Connectivity</button>
+
   <div class="d-flex">Source: {{regionName}}</div>
 
+    <mat-label>
+        Dataset
+    </mat-label>
+    <mat-slider [min]="1"
+            [max]="numberOfDatasets"
+            (change)="datasetSliderChanged($event.value)"
+            [value]="pageNumber"
+            thumbLabel
+            step="1"
+            class="w-100">
+    </mat-slider>
+
   <hbp-connectivity-matrix-row
       #connectivityComponent
       [region]="regionName"
@@ -57,11 +60,36 @@ class ExampleConnectivityBrowserWrapper {
   featureId: string
 
   regionName: string = 'Area TE 3 (STG) right'
+  type: string = 'siibra/features/connectivity/streamlineCounts'
+  pageNumber = 1
+  numberOfDatasets = 1
   private regionIndexInMatrix = -1
   public connectionsString: string
 
 
-  constructor(private sapi: SAPI) {
+  constructor(private sapi: SAPI, private cdf: ChangeDetectorRef) {
+  }
+
+  datasetSliderChanged(pageNumber) {
+    this.pageNumber = pageNumber
+    this.loadDataset()
+  }
+
+  loadDataset() {
+    return this.sapi.getParcellation(this.atlas["@id"], this.parcellation["@id"])
+        .getFeatures({page: this.pageNumber, size: 1}, {type: this.type})
+        .pipe(
+            take(1),
+            catchError(() => {
+              return of(null)
+            })
+        ).subscribe((res: any) => {
+          if (res && res.items) {
+            this.numberOfDatasets = res.total
+            this.featureId = res.items[0]['@id']
+            this.fetchConnectivity()
+          }
+        })
   }
 
   fetchConnectivity() {
@@ -93,7 +121,6 @@ export default {
         AngularMaterialModule,
         HttpClientModule,
         BrowserAnimationsModule,
-        FormsModule,
       ],
       providers: [
         SAPI
diff --git a/src/atlasComponents/sapiViews/features/connectivity/connectivityMatrix/connectivityMatrix.component.ts b/src/atlasComponents/sapiViews/features/connectivity/connectivityMatrix/connectivityMatrix.component.ts
deleted file mode 100644
index 44fa05d6623595e6100e4e86149f52c6fe5b4bf1..0000000000000000000000000000000000000000
--- a/src/atlasComponents/sapiViews/features/connectivity/connectivityMatrix/connectivityMatrix.component.ts
+++ /dev/null
@@ -1,87 +0,0 @@
-import { AfterViewInit, Component, ElementRef, Input, OnChanges, SimpleChanges } from "@angular/core";
-import { SAPI, SapiAtlasModel, SapiParcellationModel } from "src/atlasComponents/sapi";
-import { PARSE_TYPEDARRAY } from "src/atlasComponents/sapi/sapi.service";
-import { SapiParcellationFeatureMatrixModel, SapiSerializationErrorModel } from "src/atlasComponents/sapi/type";
-import { EnumColorMapName } from "src/util/colorMaps";
-
-@Component({
-  selector: 'sxplr-sapiviews-features-connectivity-matrix',
-  templateUrl: './connectivityMatrix.template.html',
-  styleUrls: [
-    `./connectivityMatrix.style.css`
-  ]
-})
-
-export class ConnectivityMatrixView implements OnChanges, AfterViewInit{
-
-  @Input('sxplr-sapiviews-features-connectivity-matrix-atlas')
-  atlas: SapiAtlasModel
-  
-  @Input('sxplr-sapiviews-features-connectivity-matrix-parcellation')
-  parcellation: SapiParcellationModel
-
-  @Input('sxplr-sapiviews-features-connectivity-matrix-featureid')
-  featureId: string
-
-  matrixData: SapiParcellationFeatureMatrixModel
-  private pleaseRender = false
-  private renderBuffer: Uint8ClampedArray
-  width: number
-  height: number
-  
-  private async fetchMatrixData(){
-    this.matrixData = null
-    const matrix = await this.sapi.getParcellation(this.atlas["@id"], this.parcellation["@id"]).getFeatureInstance(this.featureId).toPromise()
-    if ((matrix as SapiSerializationErrorModel)?.type === "spy/serialization-error") {
-      return
-    }
-    this.matrixData = matrix as SapiParcellationFeatureMatrixModel
-    this.width = this.matrixData.matrix["x-width"]
-    this.height = this.matrixData.matrix["x-height"]
-  }
-
-  ngAfterViewInit(): void {
-    if (this.pleaseRender) {
-      this.renderCanvas()
-    }
-  }
-
-  async ngOnChanges(changes: SimpleChanges) {
-    await this.fetchMatrixData()
-    const { result, max, min } = await this.sapi.processNpArrayData<PARSE_TYPEDARRAY.CANVAS_COLORMAP_RGBA>(this.matrixData.matrix, PARSE_TYPEDARRAY.CANVAS_COLORMAP_RGBA, { colormap: EnumColorMapName.JET })
-    const rawResult = await this.sapi.processNpArrayData<PARSE_TYPEDARRAY.RAW_ARRAY>(this.matrixData.matrix, PARSE_TYPEDARRAY.RAW_ARRAY)
-    console.log({
-      rawResult
-    })
-    this.renderBuffer = result
-    this.renderCanvas()
-  }
-
-  private renderCanvas(){
-
-    if (!this.el) {
-      this.pleaseRender = true
-      return
-    }
-
-    const arContainer = (this.el.nativeElement as HTMLElement)
-    while (arContainer.firstChild) {
-      arContainer.removeChild(arContainer.firstChild)
-    }
-
-    const canvas = document.createElement("canvas")
-    canvas.height = this.height
-    canvas.width = this.width
-    arContainer.appendChild(canvas)
-    const ctx = canvas.getContext("2d")
-    const imgData = ctx.createImageData(this.width, this.height)
-    imgData.data.set(this.renderBuffer)
-    ctx.putImageData(imgData, 0, 0)
-    this.pleaseRender = false
-  }
-
-  constructor(private sapi: SAPI, private el: ElementRef){
-
-  }
-
-}
\ No newline at end of file
diff --git a/src/atlasComponents/sapiViews/features/connectivity/connectivityMatrix/connectivityMatrix.style.css b/src/atlasComponents/sapiViews/features/connectivity/connectivityMatrix/connectivityMatrix.style.css
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/src/atlasComponents/sapiViews/features/connectivity/connectivityMatrix/connectivityMatrix.template.html b/src/atlasComponents/sapiViews/features/connectivity/connectivityMatrix/connectivityMatrix.template.html
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/src/atlasComponents/sapiViews/features/connectivity/exampleConnectivity.stories.ts b/src/atlasComponents/sapiViews/features/connectivity/exampleConnectivity.stories.ts
deleted file mode 100644
index 94bf2a98472667e2290d02c22a3dfd3d804bb0dd..0000000000000000000000000000000000000000
--- a/src/atlasComponents/sapiViews/features/connectivity/exampleConnectivity.stories.ts
+++ /dev/null
@@ -1,105 +0,0 @@
-import { CommonModule } from "@angular/common"
-import { HttpClientModule } from "@angular/common/http"
-import { Component } from "@angular/core"
-import { FormsModule } from "@angular/forms"
-import { BrowserAnimationsModule } from "@angular/platform-browser/animations"
-import { Meta, moduleMetadata, Story } from "@storybook/angular"
-import { SAPI, SapiAtlasModel, SapiParcellationModel } from "src/atlasComponents/sapi"
-import { getJba29Features, getHumanAtlas, getJba29 } from "src/atlasComponents/sapi/stories.base"
-import { SapiParcellationFeatureModel } from "src/atlasComponents/sapi/type"
-import { AngularMaterialModule } from "src/sharedModules"
-import { ConnectivityMatrixView } from "./connectivityMatrix/connectivityMatrix.component"
-
-@Component({
-  selector: 'autoradiograph-wrapper-cmp',
-  template: `
-  <mat-form-field appearance="fill">
-    <mat-select [(ngModel)]="featureId">
-      <mat-option value="null" disabled>
-        --select--
-      </mat-option>
-
-      <mat-option [value]="feat['@id']"
-        *ngFor="let feat of features">
-        {{ feat.name }}
-      </mat-option>
-    </mat-select>
-  </mat-form-field>
-  <sxplr-sapiviews-features-connectivity-matrix
-    class="d-inline-block w-100 h-100"
-    *ngIf="featureId"
-    [sxplr-sapiviews-features-connectivity-matrix-atlas]="atlas"
-    [sxplr-sapiviews-features-connectivity-matrix-parcellation]="parcellation"
-    [sxplr-sapiviews-features-connectivity-matrix-featureid]="featureId"
-  >
-  </sxplr-sapiviews-features-connectivity-matrix>
-  `,
-  styles: [
-    `
-    :host
-    {
-      display: block;
-      max-width: 60rem;
-      max-height: 60rem;
-    }
-    `
-  ]
-})
-class ExampleConnectivityMatrixWrapper {
-  atlas: SapiAtlasModel
-  parcellation: SapiParcellationModel
-  features: SapiParcellationFeatureModel[] = []
-  featureId: string
-}
-
-export default {
-  component: ExampleConnectivityMatrixWrapper,
-  decorators: [
-    moduleMetadata({
-      imports: [
-        CommonModule,
-        AngularMaterialModule,
-        HttpClientModule,
-        BrowserAnimationsModule,
-        FormsModule,
-      ],
-      providers: [
-        SAPI
-      ],
-      declarations: [
-        ConnectivityMatrixView
-      ]
-    })
-  ],
-} as Meta
-
-const Template: Story<ExampleConnectivityMatrixWrapper> = (args: ExampleConnectivityMatrixWrapper, { loaded }) => {
-  const { atlas, parc, features } = loaded
-  return ({
-    props: {
-      ...args,
-      atlas: atlas,
-      parcellation: parc,
-      features
-    },
-  })
-}
-
-Template.loaders = [
-  async () => {
-    const atlas = await getHumanAtlas()
-    const parc = await getJba29()
-    const features = await getJba29Features()
-    return {
-      atlas, parc, features
-    }
-  }
-]
-
-export const Default = Template.bind({})
-Default.args = {
-
-}
-Default.loaders = [
-  ...Template.loaders
-]
\ No newline at end of file
diff --git a/src/atlasComponents/sapiViews/features/connectivity/hasConnectivity.directive.ts b/src/atlasComponents/sapiViews/features/connectivity/hasConnectivity.directive.ts
index c0dff8fa94d6e150018358deff08f9c1970712f3..9f4577128c941c4eee0a2769d77be88dbf89d854 100644
--- a/src/atlasComponents/sapiViews/features/connectivity/hasConnectivity.directive.ts
+++ b/src/atlasComponents/sapiViews/features/connectivity/hasConnectivity.directive.ts
@@ -69,7 +69,7 @@ export class HasConnectivity implements OnDestroy {
           const type = m.types[0]
           
           this.sapi.getParcellation(this.atlas["@id"], this.parcellation["@id"])
-            .getFeatures({page: 1, size: 1}, type)
+            .getFeatures({page: 1, size: 1}, {type})
             .pipe(
               take(1),
               switchMap((res: any) => {
diff --git a/src/atlasComponents/sapiViews/features/connectivity/module.ts b/src/atlasComponents/sapiViews/features/connectivity/module.ts
index 5bde71aaf76f0a5e2aa6d81041a52076f46c4756..5402b4039439e6ff775507287712095ef0866104 100644
--- a/src/atlasComponents/sapiViews/features/connectivity/module.ts
+++ b/src/atlasComponents/sapiViews/features/connectivity/module.ts
@@ -1,7 +1,6 @@
 import { CommonModule } from "@angular/common";
 import {CUSTOM_ELEMENTS_SCHEMA, NgModule} from "@angular/core";
 import { SAPI } from "src/atlasComponents/sapi";
-import { ConnectivityMatrixView } from "./connectivityMatrix/connectivityMatrix.component";
 import {ConnectivityBrowserComponent} from "src/atlasComponents/sapiViews/features/connectivity/connectivityBrowser/connectivityBrowser.component";
 import {HasConnectivity} from "src/atlasComponents/sapiViews/features/connectivity/hasConnectivity.directive";
 import {AngularMaterialModule} from "src/sharedModules";
@@ -12,12 +11,10 @@ import {AngularMaterialModule} from "src/sharedModules";
     AngularMaterialModule
   ],
   declarations: [
-    ConnectivityMatrixView,
     ConnectivityBrowserComponent,
     HasConnectivity
   ],
   exports: [
-    ConnectivityMatrixView,
     ConnectivityBrowserComponent,
     HasConnectivity
   ],